Answer:
Carbon gets removed by a number of 65 GtC each year from the ocean and land plants.
Explanation:
Why is the femur of a whale considered to
be a vestigial structure?
It no longer serves a function in the animal. This is the answer
It is the most useful structure in the animal.
Answer: Because whale swims and femur is not required in this.
Explanation:
Sometimes, parts of the body that were useful to our ancestors no longer are in our bodies. These structures, like the pelvis and femur in whales, are proof that natural selection over time allowed us to evolve from ancestors who possessed different characteristics.
Whales' femur and pelvis are regarded as vestigial structures. These buildings were passed down from relatives who used them, but they are no longer in use. Animals that once walked on land have given rise to whales.
For this reason, their forebears need a pelvis and femur bones. Whales have these structures today, but they did not develop the ability to swim, despite the fact that they do.
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11. The diagram shows the formation of water from hydrogen and oxygen.
Which statement is true?
A. The reaction satisfies the Law of Conservation of Matter because only one type of substance is formed as a product.
B. The reaction satisfies the Law of Conservation of Matter because the number of each type of atom is the same in the products and reactants.
C. The reaction does not satisfy the Law of Conservation of Matter because the atoms are in different arrangements in the products and reactants.
D. The reaction does not satisfy the Law of Conservation of Matter because the new substance formed is made up of two types of atoms.
The reaction satisfies the Law of Conservation of Matter because the number of each type of atom is the same in the products and reactants.
The above given statement is true.
What is the "Law of Conservation of Matter"?
The "Law of Conservation of Matter" states that "matter can neither be created nor be destroyed". In other words, the total mass of an isolated system remains constant over time, as mass is neither created nor destroyed. This law applies to all types of matter, including atoms, molecules, and energy.
What are Atoms?
Atoms are basically the basic building blocks of matter. They are composed of protons, neutrons, and electrons and are the smallest particle of an element that still retains the properties of that element. Atoms are the fundamental units of chemistry and form the basis of all matter in the universe.
Therefore the option that is true is Option B.
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A
B
Why do different
species of
organisms look
different?
They want to have individuality.
They live in different environments and have
different adaptations. This
Answer:
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.
B
Some Galápagos Islands
have mountains and
some do not. What does
this mean for the climates
of these islands?
These islands have different climates this
Mountains have nothing to do with climate
The Galápagos Islands have a distinctive island ecosystem because of environmental factors. Despite being close to the equator, the Galápagos Islands benefit from cool ocean currents.
What is the speciality of Galápagos Islands?The highest point in the Galapagos Islands, Wolf Volcano, is situated on Isabela Island. The mountain has a 5,600-foot peak (1,707 meters). It is named for a German geologist from the 19th century and is a shield volcano as well.
The steep mountainous terrain of the Galápagos Islands was shaped by several volcanic eruptions. Most people recognize the Galápagos for their wide variety of plant and animal species. Numerous species are endemic, which implies they can only be found in certain specific areas.
Being on the equator, the climate in the Galapagos Islands does not change significantly throughout the year. The Islands' climate is most appropriately categorized as subtropical.
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Similar to the regulation of body temperature, blood glucose level regulation in humans involves the process of negative feedback.
Drag the labels to show how blood glucose level is maintained within a narrow range.
Blood glucose level increases:
The pancreas releases glucagon, which stimulates the liver to release glucose into the blood.
Brood glucose level decreases.
The pancreas releases insulin. which causes glucose enter body
The negative feedback regulation of blood glucose levels is as follows:
Blood glucose level decreases below normal:
The pancreas releases glucagon, which stimulates the liver to release glucose into the blood --> Blood glucose level increasesBlood glucose level increases above normal:
The pancreas releases insulin. which causes glucose enter body --> Blood glucose level decrease.What is a negative feedback regulation mechanism?A negative feedback regulation mechanism is a mechanism of regulation of a process in which a product of the process is used to regulate the formation of that process.
For example, when the product of cellular respiration, ATP serves as a negative feedback regulator of the process of glycolysis which is a part of the cellular respiration pathways for the breakdown of blood glucose.
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Which change is an example of a response to a stimulus?
*
1 point
(1) The pupil of an eye decreases in size in bright light.
(2) A leaf absorbs sunlight in the morning.
(3) The water level of a pond rises on a rainy day.
(4) A dead tree decays after many years.
Answer: (1) The pupil of an eye decreases in size in bright light.
Explanation: When the light hits the eye, it stimulates the pupil to contract.
The figure shows the stages of core collapse inside a highly massive main-sequence star. Label the stages with the appropriate descriptions.
The correct order of the stages of core collapse inside a highly massive main-sequence star is given in the attachment.
What is a main-sequence star?A main-sequence star is a name used to describe any star that has a hot, dense core that fuses hydrogen into helium to produce energy.
The stages in the collapse of a main-sequence star are described below:
The rebound of Infalling material off the coreGravitational collapse of the inert iron coreExpanding shock wave tears through the stellar interiorPhotodisintegr ation of iron in the core releasing neutrinosShock wave reaches the surface as a type lILearn more about main-sequence stars at:https://brainly.com/question/27242930
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The cell membrane ___________.
(more than one answer)
A,. helps to protect the cell
B. produces glucose
C. produces energy
D. keep the internal conditions of the cell stable
Answer: D and A
Explanation:
The plasma membrane, or the cell membrane, provides protection for a cell. The cell membrane maintains homeostasis in three main ways
HELP QUICKLY PLEASE !!!
1. Why are Clostridium Botulinum considered to be very pathogenic?
2. At what stage do Clostridium Botulinum produce toxins?
Answer:
1. Clostridium Botulinum can only grow in the absence of oxygen.
2. Clostridium Botulinum grows and produces toxins in food prior to consumption.
Which of these
is NOT a sex-
linked disorder?
A. muscular dystrophy
C. hemophilia
3
B. color blindness
D. codominance this
Answer: Which of these is NOT a sex-linked disorder?
D. codominance
Explanation:
The correct answer is optionD. Codominance. Codominance is not a sex-linked disorder. Sex-linked disorders are genetic conditions that are associated with genes located on the sex chromosomes (X and Y). Option A, muscular dystrophy, and option C, hemophilia, are both examples of sex-linked disorders. These conditions are more commonly seen in males because the genes for these disorders are carried on the X chromosome, and males only have one X chromosome. Option B, color blindness, is also a sex-linked disorder. It is caused by a mutation in the genes on the X chromosome. However, option D, codominance, is not a sex-linked disorder. Codominance refers to a situation where both alleles of a gene are expressed equally in the phenotype of an individual. It is not specifically related to the sex chromosomes.
What is a common
ancestor?
A. the oldest living member of a family
or population of organisms
B. the first and oldest organism of a
new species
C. the first level of a family tree
D. the organism that was the
beginning of multiple new species as a
result of evolution this is answer
Bailey is on the tenth frame of her recent bowling competition and she needs to pick up the last pin for a spare and the first-place trophy. She rolls the 4-kg ball down the lane and it hits the 3.0-kg pin head on. The ball was moving at 9 m/s before the collision. The pin went flying forward at 12 m/s. Determine the post-collision velocity of the ball.
The post-collision velocity of the ball is 0.25m/s. The ball follows the law of conservation of momentum.
What is conservation of momentum?The law of conservation of momentum states that the amount of momentum remains constant. The momentum is neither created nor destroyed, but can only transform through the action of forces as described by Newton's laws of motion.
Initial Momentum = Final Momentum
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Here, the external force is zero, so this will follow the law of conservation of momentum of system.
The mass of ball (m₁) = 4kg and with initial speed (u₁)= 9m/s
mass of pin (m₂) = 3.0kg with zero initial speed
Now, let the final speed of ball = v₁ and final speed of pin (v₂) = 12m/s
Now, by applying momentum conservation
m₁u₁ + m₂ × 0 = m₁v₁ + m₂v₂
4.0kg × 9.0m/s = 4.0kg × v₁ + 3.0kg × 12m/s
36.0kgm/s - 36.0kgm/s = 4.0 × v₁
So, final speed of ball (v₁) = 0.25m/s
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Which statement is true?
A. Mendelian inheritance concerns the genetic traits of plants, while non-Mendelian inheritance concerns animal genetic traits.
B. Mendelian inheritance concerns the genetic traits of plants, while non-Mendelian inheritance concerns animal genetic traits.
C. Mendelian inheritance concerns the genetic traits of domesticated plants and animals, while non-Mendelian inheritance concerns human genetic traits.
D. Mendelian inheritance concerns the genetic traits of domesticated plants and animals, while non-Mendelian inheritance concerns human genetic traits.
The statement Mendelian inheritance concerns the genetic traits of domesticated plants and animals, while non-Mendelian inheritance concerns human genetic traits is true (Option C).
Who was Gregor Mendel?Gregor Mendel was a Hungarian botanist who performed different crosses between pure lines of pea plants, which led him to develop a series of hypotheses that are nowadays laws in the genetic field.
Therefore, with this data, we can see that Gregor Mendel discovered several inheritance laws by working with pea plants and these discoveries can be applied to plant genetics, animal genetics and also to humans.
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What is a NEGATIVE effect of
genetic drift?
A. the development of a new species
B. the cause of a mass extinction
C. the loss of diversity within a population
D. the movement of organisms
The statement which represents a negative effect of genetic drift is that it involves the loss of diversity within a population. Thus, the correct option for this question is C.
What is Genetic drift?Genetic drift may be defined as a type of non-directional and random fluctuation in which allele frequencies of a population may change over generations due to chance or sampling errors. It takes place in all populations of non-infinite size.
This type of evolutionary force arises through a genetic bottleneck which develops when a population undergoes a drastic reduction in population size. So, the loss of genotypes of diversity within the population is one of the major negative effects of genetic drift.
Therefore, the correct option for this question is C.
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Show the cross for a pure breeding short haired Guinea pig and a long haired Guinea pig.what is the genotype of the offspring ??
Answer:
let L= represent allele for long hair l= represent allele for short hairGenotype of offsprings will all have Ll that’s if the long haired Guinea pig is homozygous dominant for the traitbut,
Genotype of offsprings will be,Ll Ll ll and ll that's when the long haired pig is a heterozygous situationwhen an enzyme can no longer bind to its substrate the enzyme is considerd to be
Answer:
Denatured
Explanation:
However, extremely high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature.
23. A student performs an activity in which a soluble colored substance is dropped in a beaker filled with water, as shown in the figure.
Which statement explains why the water in the beaker is a uniform color after a period of time?
A. The molecules of the colored substance move randomly through the water, with the majority moving from an area of high concentration to an area of low concentration.
B. The water molecules are altered and replaced by the molecules of the colored substance.
C. The molecules of the colored substance move randomly through the water, with the majority moving from an area of low concentration to an area of high concentration.
D. The colored substance molecules are altered and replaced by the molecules of the water.
Answer: A. The molecules of the colored substance move randomly through the water, with the majority moving from an area of high concentration to an area of low concentration.
Explanation: When a substance is dissolved in water or any other substance, the molecules will move to an area they have not. When food coloring is placed in water, it moves to areas it hasn't touched because it has to expand.
What two traits did Mendel
cross in the first dihybrid
test?
A. seed shape and seed color this
B. plant height and pod shape
C. seed shape and plant height
Seed shape and seed color these two traits did Mendel cross in the first dihybrid test.
Hence, Option A is the correct answer.
A mating experiment between two organisms that are equally hybrid for two traits is referred to as a dihybrid cross. A heterozygous organism is one that possesses two distinct alleles at a single genetic location or locus.
Mendel used a dihybrid cross to combine two contradictory features, such as the color and form of seeds, for breeding purposes. He selected the round yellow seed and the wrinkled green seed and crossed them.
In the F1 generation, he only succeeded in getting round yellow seeds. This demonstrated that seeds are often spherical and yellow in color in the natural world. While seeds' wrinkled appearance and green color are recessive characteristics. F1 offspring was later self-pollinated. Four different seed combinations in F2 were produced as a result.
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The graph shows the projected increase in the world population and the projected changes in the populations of individual continents. Which statement is supported by the data in the graph?
A. The fertility rate on Earth is increasing quickly.
B. The birthrate on Earth is higher than the death rate.
C. Earth's carrying capacity has been surpassed.
D. Earth's immigration rate is higher than its emiaration rate.
The graph shows the projected increase in the world population and the projected changes in the populations of individual continents: (A) Earth's population will increase quickly because the graph is between millions of people and world population growth.
What is World population?Any whole group that shares at least one trait is referred to be a population. Populations are more than simply individuals. Populations may include—but are not restricted to—people, animals, organizations, structures, houses of worship, automobiles, farms, and other things or occasions.
Rapid population growth makes it more difficult for low- and lower-middle-income nations to finance the per capita rise in public spending required to eradicate poverty, end hunger and malnutrition, and assure universal access to health care, education, and other important services.
The current world population of 7.6 billion is expected to reach 8.6 billion in 2030, and 9.8 billion in 2050 according to the UN.
Thus, we can conclude that the earth's population will increase quickly.
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If a person circulatory system does not function well how might thermoregulation in his or her body be affected
View the picture below
The action of muscle 3 elevates the shoulder joint, abducts, and rotates the scapula.
What is scapula?
The scapula is a bone with a flat, triangular form. It is situated on the dorsal side of the rib cage in the upper thoracic area. It forms the shoulder joint by joining with the humerus at the glenohumeral joint and the clavicle at the acromioclavicular joint.
The scapula is a crucial bone for the shoulder joint's proper operation. It engages in six different motions, including protraction, retraction, elevation, depression, upward rotation, and downward rotation, all of which enable full-functional movement of the upper extremities. The scapula covers the posterior upper chest, including the underlying nerves and blood arteries, in addition to stabilizing the other bones involved in rotating the shoulder.
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4 Which characteristics of living organisms are shown as the head of a flower faces the sun all day?
A excretion and growth
B nutrition and irritability
C irritability and movement
D movement and respiration
5 Which is common to all organisms?
A asexual reproduction
B breathing
C excretion
D locomotion
6 Which features are not common to living things and most machines?
A excretion/eliminate waste
B movement/propulsion
C reproduce/self-duplicate
D respiration/combustion
7 What do you think has been least important to human evolutionary success?
A a large well-developed forebrain
B large size
C opposable thumbs
D stereoscopic vision
8 Which of the following characteristics is present in humans but not all other mammal species?
A constant body temperature
B diaphragm
C mammary glands
D vocal cords
9 The Aedes mosquito transmits the dengue virus. What is the role of the mosquito and the virus?
Mosquito Virus
A a pathogen a pathogen
B a pathogen a vector
C a vector a pathogen
D a vector a vector
10 Which feature of humans is best helped by them being bipedal?
A intelligence
B locomotion
C swimming
D tool making
Short answer and essay type questions
11 (a) List the characteristics you would use to decide if something was living or dead.
(b) Which of these characteristics would best show you quickly whether an animal, which appears to be dead, is living?
12 Give a brief definition of the following terms
(a) respiration
(b) irritability
(c) nutrition
13 Under the headings organ, stimulus and response, list all the organs of the body that can detect stimuli, alongside name the stimulus and then the body's response.
4. Excretion and growth is a characteristics of living organisms that is shown as the head of a flower faces the sun all day.
Option A is correct.
5. That which is common to all organisms is excretion.
Option C is correct.
6. Movement/ propulsion are features that are not common to living things and most machines.
Option B is correct.
7. Large size has been least important to human evolutionary success?
Option B is correct.
8. The characteristic that is present in humans but not all other mammal species is vocal cords
Option D is correct
9. The Aedes mosquito transmits the dengue virus. The role of the mosquito is pathogen and the virus is a vector.
Option B is correct.
10. The feature of humans is best helped by them being bipedal is locomotion
So, option B is correct.
11. Growth and development,
reproduction
made of cells, response to its environment,
adaptation
11b, all the characteristics shown above.
12a respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction that's to the environment.
12b, Irritability is a feeling of agitation that you might experience as a result of stress, mental health conditions, or physical disorders
12c, Nutrition is the biochemical and physiological process by which an organism uses food to support its life.
13. eyes is for sight
noses are for smell,
we listen with our ears,
we taste with our tongue,
and we touch with our skin.
What is excretion?Excretion is described as a process in which metabolic waste is eliminated from an organism.
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All plants make their own food. Which of the following is NOT required
for these plants to make their own food?
A. sunlight
B. water
C. dirt
D. air
Answer:
D Air.
Explanation:
All the other options are needed for food except air.
If you discover a new species what characteristics does that species need to be included in each of the kingdoms?
If you are to discover a new species, the characteristics of the species that need to be included in each of the kingdoms include the following below:
Archaea - prokaryotic, unicellular, auto/heterotrophic, cell wall, uncommon lipids. Bacteria - prokaryotic, unicellular, cell wall - peptidoglycan, auto/heterotrophic.Protista - eukaryotic, most unicellular- some colonial, cell wall- pectin, auto/heterotrophic.Fungi - eukaryotic, most multicellular. cell wall- chitin. heterotroph Plantae - eukaryotic, multicellular, autotrophic. cell wall- cellulose.Animalia - eukaryotic, multicellular, no cell wall, heterotroph.What is Kingdom?This is referred to as a taxonomic rank that is composed of smaller groups called phyla.
They have their unique properties which is checked before the organisms are grouped under any of them. An example is kingdom animalia which is eukaryotic, multicellular, and has no cell wall.
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Which cells are haploid and which cells are diploid???
Organisms capable of sexual reproduction are diploid. Humans only have haploid cells in the egg and sperm.
What is reproduction?Reproduction is defined as the process by which new organisms (offspring) of the same sort are created. It contributes to evolution by generating variants through genetic recombination. The ecosystem's species diversity is aided by it.
Two complete sets (2n) of chromosomes are present in diploid cells. A haploid cell only has one complete pair of chromosomes and has half as many chromosomes (n) as a diploid cell.
Thus, organisms capable of sexual reproduction are diploid. Humans only have haploid cells in the egg and sperm.
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What might be one limitation of using a greenhouse as a model to represent a large farm?
The one limitation of using a greenhouse as a model to represent a large farm is that a greenhouse is not exposed to the same weather patterns as a large farm. Thus, the correct option is B.
What is a greenhouse?A greenhouse is a building with the glass walls and a glass roof. Greenhouses are the models which are used to grow plants, such as tomatoes and tropical flowers in a specific weather condition.
A greenhouse stays warm inside, even during the winter time. In the daytime, sunlight shines into the greenhouse and warms the plants and air that are present inside. A greenhouse helps in creating a microclimate that controls the temperature and humidity we want to expose the plants to.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
What might be one limitation of using a greenhouse as a model to represent a large farm?
A. A greenhouse is a controlled environment, and a large farm is not.
B. A greenhouse is not exposed to the same weather patterns as a large farm.
C. A greenhouse has a water system that can be controlled by the farmer
D. A greenhouse has more pests than a large farm.
Identify Structure D.
Phospholipids compose the cell membrane, arranged as a bilayer. Their heads can be in contact with water. Their tails are against each other in the interior of the membrane. Structure D represents the lipidic bilayer.
What is the composition of the cell membrane?
The cell membrane is composed of a lipidic bilayer, cholesterol, proteins, and glucans incrusted in between.
Lipidic bilayer
The lipidic bilayer is composed of phospholipids.
Phospholipids are amphipathic molecules with hydrophilic heads and hydrophobic tails.
Their hydrophilic polar heads are facing the exterior and the interior of the cells. Their hydrophobic tails are against each other, constituting the internal part of the membrane.Cholesterol
These molecules are incrusted in the membrane between the hydrophobic tails of lipids.
Proteins
Integral proteins (Transmembrane proteins or Monotypic integral proteins) Periferic proteinsCarbohydrates
Carbohydrates associate with lipids and proteins to compose glycolipids and glycoproteins.
They are mostly located in the external lipidic monolayer, facing the cell exterior.
In the image, structure D is representing the lipidic bilayer.
We can identify
the polar heads, facing the exterior and interior of the cell. They are represented as circles. the hydrophobic tails, facing each other in the intermembrane space. They are represented with thin lines.You can learn more about the lipidic bilayer at
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What is a common misconception
of evolution?
A. Evolution is a slow process.
B. Evolution is a theory and there is evidence for it.
C. Evolution was developed by Charles Darwin.
D. Evolution is when apes stood up and developed
into humans. This
A common misconception of evolution is that it is when apes stood up and developed into humans (option D).
What is evolution in biology?Evolution is the transformation of animals, plants and other living things into different forms (now understood as a change in genetic composition) by the accumulation of changes over successive generations.
The theory of evolution is based on the idea that all species are related and gradually change over time.
Charles Darwin, who developed evolution, proposed a theory which states that evolution happens by natural selection. Darwin published his theory of evolution in the origin of species where he presented evidence to support this theory that all life on earth evolved from a common ancestor.
Therefore, option D is a misconception of evolution.
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A common trait found in orange tabby cats is the following: being awesome (A) is dominant to being average (a).
A male cat that is homozygous dominant for the A trait is mated with a female cat that is homozygous recessive.
For a cross with four offspring, what is the probability that they will have an offspring who is heterozygous?
out of
Word Bank:
25
4
0
4
75
100
50
Answer:
There is a 0% chance
Explanation:
The probability that they will have an offspring who is heterozygous is 50%.
What are trait?Trait are defined as a qualities or aspects of an organism that are either influenced by the environment or expressed through genes. Traits may be influenced by genes, the environment, or a mixture of the two. There are both qualitative and quantitative traits. A characteristic is an unchanging constant that is passed down from parent to child at birth.
Cat male, AA Bb
Cat, female - aa bb
Cross: AA Bb x AB
Punntte: AB Gametes: AB, Ab, and ab AaBb ab ab Aabb
For a heterozygous trait, the trait probability is either 1 or 100%.
The likelihood of the b characteristic being heterozygous is 50%, or 1/2.
The overall probability is 50% = 50%.
Thus, the probability that they will have an offspring who is heterozygous is 50%.
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If we start with 60 atoms of uranium-238 how many would remain after 4,470,000,000 years?
Answer:
30
Explanation:
4,470,000,000 is 4.47 billion years
half-life of uranium-238 is 4.468 billion years
60 divided by 2 is 30
pshspsd202org
wikipedia
After approximately 4,470,000,000 years, there would be approximately 30 uranium-238 atoms remaining from the initial 60 atoms as half-life of uranium-238 is approximately 4.5 billion years.
To calculate the number of remaining uranium-238 atoms after a given time,
N = N0 × [tex](1/2)^(^t^ /^ T^)[/tex]
Where: N = Number of remaining atoms N0 = Initial number of atoms t = Time that has elapsed T = Half-life of the substance
In this case, N0 (initial number of atoms) is given as 60, T (half-life of uranium-238) is 4.5 billion years, and t (time elapsed) is 4,470,000,000 years.
Let's plug these values into the formula:
N = 60 ×[tex](1/2)^(^4^,^4^7^0^,^0^0^0,^0^0^0^/^4,^5^0^0^,^0^0^0,^0^0^0^)[/tex]
Calculating this,
N ≈ 60× [tex](1/2)^0^.^9^9^3^3[/tex]
N ≈ 60 × 0.5005
N ≈ 30.03
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