Answer: Desert, tundra, grassland, swamp, rainforest
Explanation: Hope it Helps
Which phrases describe groundwater? Check all that apply. A. feeds surface water supplies B. is the largest supply of freshwater C. includes wetlands, streams, and lakes D. is located on Earth's surface E.is found in ice sheets and glaCiers
The phrases that describe groundwater are A. feeds surface water supplies and B. is the largest supply of freshwater.
A. Groundwater plays a crucial role in feeding surface water supplies. It is the primary source of water for many streams, rivers, lakes, and wetlands. Through a process called groundwater discharge, water from underground aquifers flows into surface water bodies, replenishing them during dry periods and maintaining their flow.
B. Groundwater is indeed the largest supply of freshwater on Earth. While vast amounts of freshwater are stored in ice sheets and glaciers (as mentioned in option E), these frozen sources are not immediately accessible for human use. Groundwater, on the other hand, is more readily available and accessible for various purposes, including drinking water, irrigation, and industrial use. It constitutes a significant portion of the planet's usable freshwater resources.
C. The option C, which states that groundwater includes wetlands, streams, and lakes, is incorrect. Groundwater refers specifically to the water that is stored beneath the Earth's surface in underground aquifers. Wetlands, streams, and lakes are surface water bodies that are fed by groundwater but are not part of groundwater itself.
D. The statement in option D, that groundwater is located on Earth's surface, is incorrect. Groundwater is located beneath the Earth's surface, within porous rock or sediment layers that hold water.
E. The statement in option E, that groundwater is found in ice sheets and glaciers, is incorrect. Groundwater refers to water stored underground, while ice sheets and glaciers are part of the Earth's frozen freshwater reserves, but they are not considered groundwater.
In summary, the accurate descriptions of groundwater are that it feeds surface water supplies and that it is the largest supply of freshwater on Earth.
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How might the increasing use of renewable energy technologies, such as wind turbines and solar panels, affect Earth's systems as the world population increases?
The increasing use of renewable energy technologies, such as wind turbines and solar panels can affect us:
Reduced greenhouse gas emissionsChanges to land useHow can renewable energy affect us?Renewable energy technologies are a promising solution to reducing greenhouse gas emissions and curbing the effects of climate change. The deployment of wind turbines and solar panels as viable means of generating renewable energy, could eventually slow down these emissions rates which threaten our planet’s health.
One major drawback posed by renewable energy is that they require enormous tracts of land for installation: this creates an issue of scarcity when it comes to usage rights. As we prepare to accommodate more people on this earth, growing conflicts may emerge between advocates of renewable infrastructure, food production supporters, homeowners, as well as conservation groups who argue over suitable land use policies.
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"Pitcher plants are carnivorous." Is it true or false?
Yes, it is true that pitcher plants are carnivorous. Pitcher plants are a type of carnivorous plant that have evolved to obtain essential nutrients from insects and other small organisms.
The answer in True.
These plants typically grow in nutrient-poor soil conditions and have adapted to capture and digest insects as a way to supplement their nutrient intake.
The main feature of pitcher plants is their modified leaves, which form a pitcher-like structure. This structure is filled with a liquid that contains enzymes and other substances that can break down the captured prey. The rim of the pitcher, called the peristome, is slippery, causing insects to fall into the trap. Once trapped, the insects are digested, and the nutrients are absorbed by the plant.
There are several types of pitcher plants, including the North American Sarracenia, the tropical Nepenthes, and the Cephalotus from Australia. Each species has unique adaptations and trapping mechanisms that help them capture different types of prey.
In summary, pitcher plants are indeed carnivorous, as they have adapted to obtain essential nutrients from insects and other small organisms. They do so through their unique pitcher-like structures, which are designed to trap and digest prey. This adaptation allows them to thrive in nutrient-poor soil conditions.
The answer in True.
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Which of the following statements is true?
MtDNA is found in Golgi bodies.
The nucleus holds mtDNA.
MtDNA is passed from mother to child.
Mitochondria DNA does not hold genes.
Is eating a peanut butter and banana sandwich on whole wheat bread healthy for you explain be sure to include the micro or micro nutrients derived from each part of the sandwich 
A peanut butter and banana sandwich on whole wheat bread can be a healthy meal option, depending on the ingredients used and the overall dietary context. Here are some potential nutritional benefits and considerations for each component of the sandwich:
Whole Wheat Bread:
Whole wheat bread is a good source of complex carbohydrates, dietary fiber, and various vitamins and minerals. The fiber in whole wheat bread can help promote satiety, support digestive health, and may also help reduce the risk of chronic diseases such as heart disease and type 2 diabetes.
Peanut Butter:
Peanut butter is a good source of protein, healthy fats, and various vitamins and minerals. The protein and healthy fats in peanut butter can help promote satiety, support muscle maintenance, and may also help reduce the risk of chronic diseases such as heart disease and type 2 diabetes.
Banana:
Bananas are a good source of carbohydrates, dietary fiber, and various vitamins and minerals. The carbohydrates in bananas can provide quick energy, while the fiber can help promote satiety and digestive health.
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Remains exhibit round eye orbits a subpublic angle Of 103 degrees and oval pelvic cavity and a smooth and slender skull
Answer:
a cingle aminos acid
Explanation:
hope that helps I believe that’s what it is
For both the plots with the beetles added and the control plots, state the mean tree leaf area per plot that the scientists recorded after running the experiment for 18 months
For both the plots with the beetles added and the control plots. The mean tree leaf area per plot that the scientists recorded after running the experiment for 18 months with the beetles added is 1.7 m², and for the control plots is 2.2 m²
To solve this question, you want to examine the information desk that suggests the tree leaf region according to plot for both the plots with the beetles delivered and the manipulated plots. The implication is the commonality of the statistics values, which can be found by adding up all of the values and dividing by the range of values.
Here are the calculations:
For the plots with the beetles introduced, the mean tree leaf location in step with the plot is:
(1.5+1.6+1.7+1.8+1.9)/5=1.7 m²
For the managed plots, the implied tree leaf region consistent with the plot is:
(2.0+2.1+2.2+2.3+2.4)/5=2.2 m²
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(GENETICS) With quinea fowls the gene for black colour (B) is dominant over the gene for white (b) Two heterozygotic black quinea fowls are crossed. Use a schematic representation to show the possible genotypic results that would be expected in the F1-generation.
Answer:
In the cross between two heterozygotic black guinea fowls (Bb x Bb), the possible genotypic results in the F1-generation can be represented using a Punnett square:
| B | b |
-----------------------------
B | BB | Bb |
-----------------------------
b | Bb | bb |
-----------------------------
The genotypic ratio in the F1-generation would be 1 BB : 2 Bb : 1 bb, where BB represents homozygous black, Bb represents heterozygous black, and bb represents homozygous white individuals.
Explanation:
Scenario #3
In the year 2850, humans successfully colonized Mars. The Martian modules that were constructed could
hold only a small population of people. It is now a century later, and the population on Mars has grown to
600 people. Of the current Mars population, 45 people express the recessive phenotype for phenylketon-
uria (PKU) syndrome (pp genotype).
q 2-=
q-=
P-=
P2-=
2pq-=
In the Martian population, approximately 52.7% of individuals are homozygous dominant (PP genotype), 39.8% are heterozygous (Pp genotype), and 7.5% are homozygous recessive (pp genotype).
To determine the allele frequencies and genotype frequencies in the Martian population for the phenylketonuria (PKU) syndrome, we can use the Hardy-Weinberg equilibrium equation:
[tex]p^2[/tex] + 2pq + [tex]q^2[/tex] = 1
where p represents the frequency of the dominant allele (P) and q represents the frequency of the recessive allele (p).
Given that 45 individuals express the recessive phenotype (pp genotype) out of a population of 600 people, we can calculate the frequency of the recessive allele (q) as follows:
[tex]q^2[/tex] = (number of individuals with pp genotype) / (total population)
[tex]q^2[/tex] = 45 / 600
[tex]q^2[/tex] = 0.075
Taking the square root of both sides of the equation, we find:
q = √0.075
q ≈ 0.274
Since p + q = 1, we can calculate the frequency of the dominant allele (P) as:
p = 1 - q
p = 1 - 0.274
p ≈ 0.726
Now, we can calculate the genotype frequencies:
[tex]P^2[/tex] = [tex]p^2[/tex] = [tex](0.726)^2[/tex] ≈ 0.527
2pq = 2 [tex]\times[/tex]0.726 [tex]\times[/tex]0.274 ≈ 0.398
[tex]q^2[/tex] = [tex](0.274)^2[/tex] ≈ 0.075
Therefore, in the Martian population, approximately 52.7% of individuals are homozygous dominant (PP genotype), 39.8% are heterozygous (Pp genotype), and 7.5% are homozygous recessive (pp genotype).
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Question 2Miple Choice Worth 2 points)
(05.04 MC)
What can be infered from this cladogram?
Hagfish Perch Salamander Lizard Pigeon Mouse Chimp
Feathers
Jaws
Lungs
Fur;
mammary
glands
Claws or nails
Fur and mammary glands are traits that evolved first.
Both the haglish and the salamander have jaws and lungs
Claws or nails is a characteristic that separates the lizard from the pigeon
The chimp and the mouse have the most similar characteristics.
Question 1 (Answered)
195
Next Question
From the cladogram given, we can infer several evolutionary relationships and patterns of trait acquisition among the different organisms depicted.
Firstly, we can see that all the organisms on the cladogram are separated into two main groups: the Hagfish and the Perch on one side, and the Salamander, Lizard, Pigeon, Mouse, and Chimp on the other side. This indicates that the common ancestor of the Hagfish and Perch must have diverged from the common ancestor of the Salamander, Lizard, Pigeon, Mouse, and Chimp at some point in the past.
Additionally, we can see that feathers are a trait that evolved most recently, as they are only present in the Pigeon. This suggests that the common ancestor of all the organisms on the cladogram did not have feathers, and that this trait evolved later on in the evolutionary history of birds.
Furthermore, we can see that both jaws and lungs are present in the Hagfish and the Salamander, indicating that these traits were present in the common ancestor of these two organisms. Claws or nails, on the other hand, are a characteristic that separates the Lizard from the Pigeon, suggesting that the common ancestor of reptiles and birds did not have this trait.
Overall, the cladogram provides us with a visual representation of the evolutionary relationships and patterns of trait acquisition among the different organisms depicted, allowing us to make inferences about the common ancestors and the evolution of various traits.
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Discuss the factors that
have made
North Africa and
(south west Asia) to be grouped in
the
Same
Culture
Middle Eart
area-
North Africa and Southwest Asia, also known as the Middle East, share several cultural and historical factors that have contributed to their grouping as a single region. These factors include:
Factors that have made North Africa and (south west Asia) to be grouped in the Same CultureGeography: The Middle East and North Africa share a similar geographic location, being situated at the crossroads of several continents and bordering the Mediterranean Sea, Red Sea, and Indian Ocean. This has led to shared influences from neighboring regions and a history of trade and cultural exchange.
Religion: The Middle East and North Africa are predominantly Muslim, with Islam being a major unifying factor in the region. Other shared religious traditions include Judaism, Christianity, and Zoroastrianism.
Language: Arabic is a common language throughout the Middle East and North Africa, with variations in dialect and accent depending on the country or region.
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explain the 5 mass extictions?
Answer:
There have been five major mass extinctions in the history of life on Earth, each of which resulted in the loss of a significant percentage of species. Here is a brief overview of each of the five mass extinctions:
1. Ordovician-Silurian extinction (around 440 million years ago): This extinction event is believed to have been caused by a series of glaciations that led to a drop in sea level and a loss of habitat for many marine organisms. Approximately 85% of marine species were lost during this mass extinction.
2. Late Devonian extinction (around 365 million years ago): This extinction event is believed to have been caused by a combination of factors, including climate change, sea level fluctuations, and a series of catastrophic events such as volcanic eruptions and asteroid impacts. Approximately 75% of species were lost during this mass extinction.
3. Permian-Triassic extinction (around 252 million years ago): This was the most severe mass extinction in Earth's history, with approximately 96% of all species lost. The cause of this event is not fully understood, but it is thought to have been caused by a combination of factors, including volcanic eruptions, climate change, and ocean acidification.
4. Triassic-Jurassic extinction (around 201 million years ago): This extinction event is believed to have been caused by a combination of factors, including climate change, volcanic activity, and asteroid impacts. Approximately 50% of species were lost during this mass extinction.
5. Cretaceous-Paleogene extinction (around 66 million years ago): This is the most famous mass extinction event, as it is believed to have led to the extinction of the dinosaurs. It is thought to have been caused by a large asteroid impact that caused widespread fires and a long period of darkness, which led to a loss of plant life and subsequent loss of species. Approximately 75% of species were lost during this mass extinction.
Overall, each of these mass extinctions had a significant impact on the diversity of life on Earth, and they serve as a reminder of the fragility of the planet's ecosystems and the importance of conservation efforts to protect biodiversity.
Which statement best describes the motion of objects in free fall?
A. Objects in free fall travel at a constant speed toward Earth's center.
B. Objects in free fall start by accelerating and then travel at a
constant speed toward Earth's center.
C. Objects in free fall accelerate at a constant rate toward Earth's center.
D. Objects in free fall accelerate at an increasing rate toward Earth's center.
Objects in free fall accelerate at an increasing rate toward Earth's center. The correct option is D
What is Free fall ?
When an object is falling freely, it means that it is only being affected by gravity and no other external forces.
When anything falls, the gravitational force acting on it causes it to accelerate, increasing its speed over time. Additionally, while the object falls, the rate of acceleration brought on by gravity stays constant.
Therefore, Because the force of gravity increases as the object's distance from the Earth's center decreases, things in free fall accelerate faster as they come closer to the planet's center.
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Many people prefer breeds of dog that have specific traits. Recently there has been a
surge in the business of selectively breeding dogs in order to produce those specific
traits. Which of the following would most likely be a favorable trait that dog breeders
try to produce?
The most likely be a favorable trait that dog breeders try to produce are dogs that don't shed.
What makes a dog breed worth breeding?Physical traits: Dog breeders may try to produce dogs with specific physical traits, such as a certain size, shape, or coat color. For example, some breeders may try to produce a dog that is small enough to be a lap dog, while others may try to produce a dog that is large enough to be a guard dog, dogs that don't shed.
Temperament traits: Dog breeders may also try to produce dogs with specific temperament traits, such as being friendly, playful, or obedient. For example, some breeders may try to produce a dog that is good with children, while others may try to produce a dog that is good at hunting.
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Osmosis, simple diffusion, and
facilitated diffusion all do not
require energy. What type of
transport describes these
processes?
What is the attentional spotlight and how is it related to divided-attention tasks?
The attentional spotlight refers to the idea that attention is like a spotlight that can be focused on a particular object or location, allowing us to selectively process and attend to relevant information while ignoring irrelevant information. It is related to divided-attention tasks because of how attention can be selectively directed to different stimuli or sources of information
Divided-attention tasks are tasks that require individuals to attend to multiple streams of information or stimuli simultaneously. These tasks can be challenging because attention is a limited resource, and dividing attention between multiple sources of information can lead to errors and decreased performance.
The attentional spotlight is related to divided-attention tasks because it illustrates how attention can be selectively directed to different stimuli or sources of information. When individuals are engaged in divided-attention tasks, they may need to shift the attentional spotlight rapidly between different sources of information in order to effectively process and attend to all relevant information.
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Which molecule is a direct product of this cellular process?
A Glucose
B Phospholipid
C Insulin
D DNA
Answer: a
Explanation:
What is the difference between the signal on the left and the one on the right? How are they identified?
The signal on the left is an electromagnetic wave while the signal on the right is a mechanical wave.
What is the difference between the image a travelling mechanical wave and a travelling electromagnetic wave?To travel, a mechanical wave needs a physical medium like a solid, liquid, or gas. This indicates that the movement of the particles within the medium is how wave energy is conveyed.
In addition to a medium like air or a solid, an electromagnetic wave can pass through a vacuum as well. Electric and magnetic fields interact to create electromagnetic waves, which do not need a physical medium to propagate.
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The balanced equation for photosynthesis is shown below.
6CO2+6H20->C6H12O6+6O2
What best explains whether mass is conserved during photosynthesis?
It is not conserved because the total number of H atoms is 6 more than the total number of C atoms.
It it’s not conserved because the total number of O atoms is 6 more than the total number of H atoms.
Is is conserved because the total number of H atoms on each side is 12.
Is it conserved because the total number of O atoms on each side is 2.
Answer:
It is conserved because the total number of atoms on each side is the same.
Explanation:
During photosynthesis, carbon dioxide (CO2) and water (H2O) react to form glucose (C6H12O6) and oxygen (O2). The law of conservation of mass states that matter cannot be created or destroyed, only transformed from one form to another. Therefore, the total mass of the reactants should be equal to the total mass of the products.
In the balanced chemical equation for photosynthesis, the number of atoms of each element is equal on both sides of the equation. This means that the total mass of the reactants is equal to the total mass of the products, and mass is conserved during photosynthesis.
Therefore, the correct answer is that mass is conserved because the total number of atoms on each side is the same.
What might happen if water molecules didn't have a slight negative charge on one end and a slight positive charge on the other?
The polarity of water molecules is crucial to the formation and stability of cell membranes. Without this polarity, water would not be able to form hydrogen bonds, interact with polar molecules, or form stable cell membranes .
Water molecules are composed of two hydrogen atoms and one oxygen atom, and they have a slight negative charge on one end and a slight positive charge on the other.
This arrangement is due to the unequal sharing of electrons between the atoms, with the oxygen atom having a stronger pull on the electrons than the hydrogen atoms. This phenomenon is called polarity, and it is crucial to the unique properties of water.
First, water molecules would not be able to form hydrogen bonds with each other, which are crucial for many of water's unique properties. Hydrogen bonds occur between the positive and negative ends of different water molecules and give water its high boiling point, high surface tension, and the ability to dissolve many substances.
Furthermore, the polarity of water molecules is crucial to the formation and stability of cell membranes. The hydrophilic, or water-loving, heads of phospholipids are attracted to the polar water molecules, while the hydrophobic, or water-fearing, tails face away from the water.
In summary, the polarity of water molecules is crucial to many of its unique properties and is essential to many biological processes. Without this polarity, water would not be able to form hydrogen bonds, interact with polar molecules, or form stable cell membranes.
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Equilibrium occurs when supply and demand coordinate to
Oset excess demand.
Oset prices and production.
O maintain excess supply.
Oraise prices and production.
Equilibrium occurs when supply and demand coordinate to balance each other out and set excess demand. This means that the quantity of goods or services supplied is equal to the quantity demanded in a given market, and there is no excess demand or excess supply. Hence option A is correct.
In order to achieve equilibrium, prices and production levels may need to be adjusted. If there is excess demand, meaning that the quantity demanded is greater than the quantity supplied, prices may need to be raised and production may need to be increased to meet the demand. On the other hand, if there is excess supply, meaning that the quantity supplied is greater than the quantity demanded, prices may need to be lowered and production may need to be decreased in order to reduce the supply.
Overall, equilibrium occurs when supply and demand are in balance, and prices and production levels are adjusted to maintain this balance.
Hence option A is correct.
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Write out the path of blood flow through the heart starting when it returns from the body via the superior vena cava
When blood returns to the heart from the body via the superior vena cava, it enters the right atrium of the heart.
The blood then passes through the tricuspid valve and enters the right ventricle from this point. When the right ventricle contracts, blood is pumped into the pulmonary artery, which then transports the blood to the lungs for oxygenation, passing through the pulmonary valve.
After being given oxygen, the blood travels back to the heart through the pulmonary veins and reaches the left atrium. The blood then travels through the mitral valve and enters the left ventricle from this point.
The largest artery in the body, the aorta, receives oxygenated blood as a result of contractions of the left ventricle. The oxygenated blood is transported via the aorta to the remainder of the body, where it is used to nourish and provide oxygen to cells and tissues.
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How a population changes in size over a certain period of time
Question 5 of 10
The images show the early embryologic development of three vertebrates.
Vertebrate Embryos at Early Stages of Development
Chicken embryo
at 4 days
Mouse embryo
at 11 days
Which sentence describes the three embryos?
OA. They have very distinct features.
B. Only one of them has a tail.
OC. They share common features.
D. They all look like their adult forms.
Model of human embryo
at 35 days
The sentence that describes the three embryos is C, they share common features.
What are the feature of the embryos?All three embryos have a head, a tail, and four limbs. They also have a similar body shape. These common features are due to the fact that all three embryos are vertebrates. Vertebrates are animals that have a backbone.
The backbone provides support and structure for the body. It also protects the spinal cord, which is a bundle of nerves that runs from the brain to the rest of the body. These common features are evidence of the shared evolutionary history of vertebrates.
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Which two changes would you expect as a result of a severe drought that wipes out several plant populations
A severe drought that wipes out several plant populations can result in decreased biodiversity and a shift in the food chain. These changes can have far-reaching effects on the overall health and functioning of the ecosystem.
During a severe drought that wipes out several plant populations, two changes that you would expect are decreased biodiversity and a shift in the food chain.
1. Decreased biodiversity: A severe drought can have a significant impact on plant populations. With limited water availability, many plants may not survive and die off. This loss of plant species leads to decreased biodiversity in the affected area. Biodiversity refers to the variety of different species within an ecosystem. When multiple plant populations are wiped out, the overall diversity of plant species decreases, which can have long-term consequences for the ecosystem.
2. Shift in the food chain: Plants are an essential part of the food chain as they form the basis of most terrestrial ecosystems. When plant populations are wiped out by a severe drought, the loss of vegetation can disrupt the food chain.
Many animals rely on plants as a source of food, either by directly consuming them or by feeding on herbivores that eat plants. Without a sufficient plant population, herbivores may struggle to find food, which can lead to a decrease in their population. This, in turn, can affect predators that rely on these herbivores for food. Ultimately, a severe drought can cause a shift in the balance of the food chain, impacting various organisms within the ecosystem.
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What happens during the termination step of transcription? A. Base pairs are added to the mRNA transcript to make the stand too long to transcribe. B. RNA polymerase starts creating the mRNA transcript. C. RNA polymerase stops adding bases to the mRNA transcript, causing the mRNA to separate from the DNA.
During the termination step of transcription, RNA polymerase stops adding nucleotides to the growing mRNA transcript, causing the mRNA to separate from the DNA template strand and the RNA polymerase. The correct option is C
What is transcription termination ?
The precise signals that start the termination phase can differ depending on the kind of cell and the gene being transcribed during the highly regulated process of transcription termination.
The freshly created mRNA transcript is released into the cytoplasm of the cell after the termination stage so that it can go through additional processing, like splicing and modification, before being translated into protein by ribosomes.
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mention four method of vegetative propagation
Methods of vegetative propagation include cutting, grafting, layering, division, sprouting, etc.
Vegetative propagation is a method of plant propagation that uses vegetative structures such as stems, roots and leaves to create new plants without the need for seeds. There are several methods of vegetative propagation, each suitable for different plant species and desired results. Here are some commonly used methods:
1. Cutting: This involves taking part of the stem or root of the mother plant and placing it in a suitable growing medium. Cuttings develop roots that eventually grow into new plants.
2. Layering: In this method, the plant's branches and stems are bent and partially buried in the ground. Roots develop from the buried part, and when they take root, they are separated from the mother plant and a new individual is formed.
3. Grafting: This technique involves joining the tissues of two different plants, the shoot (the plant of interest) and the rootstock (which provides the root system and support). Two plant tissues fuse and the shoot grows into a new plant with the desired plant characteristics.
4. Sprouting: Similar to grafting, sprouting involves attaching the shoots of the desired plant to a rootstock. New shoots develop from the shoots with the desired plant characteristics.
5. Tissue culture: This is a laboratory-based method of culturing plant cells or tissues in a nutrient-rich medium under controlled conditions. Cells divide and differentiate into whole plants and can be transferred to soil.
These vegetative propagation methods are widely used in horticulture and agriculture to propagate plants with desirable traits or to propagate plants that do not produce viable seeds.
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Part 1: David’s Case
David was a gardener with a reputation for being a very passive and mild mannered person. Over a very short
period of time his behaviour changed markedly. He became very bad tempered and lashed out at family mem-
bers, something they describe as being completely out of character for him. While working at a client’s house
he got into an argument with her and beat her to death. The prosecution argued that he had lost his temper
and murdered her in a fit of rage. The jury believed the prosecution and he was sentenced to life in prison.
Discussion Questions:
• Based on your review of David’s case, what assumptions did you make about his behaviour?
• Do you think David was responsible for his crime?
• How significant is it that David was reported to be acting “out of character” in the days immediately prior to
the murder? What other factors may be at play?
Summarize your answers to the questions and include them in your short essay
How are the ages of extinct organisms determined?
Responses
by studying the concentration of radioactive atoms in their fossilsby studying the concentration of radioactive atoms in their fossils
by studying the hardness of their fossilsby studying the hardness of their fossils
by measuring how much the fossils’ appearance has changedby measuring how much the fossils’ appearance has changed
by counting the number of fossils known for a species by counting the number of fossils known for a species
The ages of extinct organisms are primarily determined through the study of the concentration of radioactive atoms in their fossils.
This is done through a process called radiometric dating, which involves measuring the decay of radioactive isotopes in the fossils. Different isotopes decay at different rates, and by measuring the ratio of parent isotopes to daughter isotopes in a fossil, scientists can determine its age.
Other methods, such as studying the morphology of the fossils, can provide clues to their age, but radiometric dating is the most reliable method for determining the ages of extinct organisms.
Therefore, the ages of extinct organisms are determined by studying the concentration of radioactive atoms in their fossils.
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8. A multicellular organism.
Answer:
In contrast to unicellular organisms, multicellular organisms are made up of many cells.
Three examples of multicellular organisms are plants, animals and fungi.
Answer:
they are made up of more cells instead of unicelular which is made up of 1