what are the answer choices?
Remains, impressions, or traces of an organism that lived in the past
O Sedimentary Layers
O Fossils
O Diversity
Extinction
O Fossil Record
Answer:
FossilsExplanation:
Remains, impressions, or traces of an organism that lived in the past Fossils.Answer :
Fossils
Fossils are the remains of living things turned into mineral stones
There are many kinds of fossils. Fossils can be divided into several parts
Sory if wrong :)
Where do new alleles arise from?
Answer:
Gene mutations provide new alleles, making these mutations the ultimate source of variation. A gene mutation is an alteration in the DNA nucleotide sequence, producing an alternate sequence, termed an allele. Mutations occur at random, and can be beneficial, neutral, or harmful.
Explanation:
Which neurotransmitters are used for each division of the autonomic nervous system? Be sure to describe the synapse at the autonomic ganglion and at the effector. What component of the system determines if a given neurotransmitter has an excitatory or inhibitory effect on the target effector?
Answer:
The autonomic nervous system is in charge of controlling visceral effectors. Traditionally, it is described by its peripheral nervous components (ganglia, nerves and plexuses) and two divisions are distinguished: the sympathetic and the parasympathetic. Transmission of the excitatory stimulus through the synaptic cleft occurs by release of neurotransmitters; the neurotransmitters of the sympathetic and parasympathetic nervous system are mainly norepinephrine (NA) and acetylcholine (AC). The NA-secreting fibers are called adrenergic and those that secrete AC, cholinergic. All preganglionic neurons, both those of the sympathetic nervous system and those of the parasympathetic nervous system, are cholinergic. The neuron that releases the neurotransmitter is called a presynaptic neuron. The signal receptor neuron is called a postsynaptic neuron. Depending on the type of neurotransmitter released, postsynaptic neurons are either stimulated (excited) or de-stimulated (inhibited).
Explanation:
The autonomic nervous system is the part of the central and peripheral nervous system that is responsible for the regulation of the involuntary functions of the organism, the maintenance of internal homeostasis and the adaptive responses to variations in the external and internal environment and two divisions are distinguished: the sympathetic and the parasympathetic. Acetylcholine is the preganglionic neurotransmitter of both divisions of the S.N.A. (sympathetic and parasympathetic) and also of the postganglionic neurons of the parasympathetic. The nerves at whose endings acetylcholine are released are called cholinergic. Norepinephrine is the neurotransmitter of postganglionic sympathetic neurons. The nerves into which norepinephrine is released are called adrenergic. Within the efferent sympathetic impulses, the postganglionic neurons that innervate the eccrine sweat glands and some blood vessels that supply the skeletal muscles are of the cholinergic type. Both acetylcholine and norepinephrine act on the different organs to produce the corresponding parasympathetic or sympathetic effects. The peripheral nerve endings of the sympathetic form a reticulum or plexus from which the terminal fibers come in contact with the effector cells. All the norepinephrine in peripheral tissues is found in the sympathetic endings in which it accumulates in subcellular particles analogous to the chromaffin granulations of the adrenal medulla. The release of norepinephrine at nerve endings occurs in response to action potentials that travel through nerve endings. The receptor, when stimulated by catecholamines, sets in motion a series of membrane changes that are followed by a cascade of intracellular phenomena that culminate in a measurable response. There are two classes of adrenergic receptors known as alpha and beta. These two classes are again subdivided into others that have different functions and that can be stimulated or blocked separately. Norepinephrine primarily excites alpha receptors and beta receptors to a small extent. The neurotransmitter acetylcholine is synthesized at the axonal terminal and deposited in synaptic vesicles. Acetylcholine activates two different types of receptors, called muscarinic and nicotinic receptors. Acetylcholine (AC) synthesis takes place at presynaptic termination by acetylation of choline with acetyl-coenzyme A, a reaction catalyzed by acetylcholinetransferase. The energy required for the release of a neurotransmitter is generated in the mitochondria of the presynaptic terminal. Binding of neurotransmitters to postsynaptic membrane receptors produces changes in membrane permeability. The nature of the neurotransmitter and the receptor molecule determines whether the effect produced will be one of excitation or inhibition of the postsynaptic neuron.
Species that evolved in coral reef habitats always stay in those habitats. Coral reefs have much biodiversity, but most species that live there migrated from other habitats. Most organisms that live in coral reef habitats are zooxanthellae. More new species have evolved in coral reef habitats than in most other types of habitats.
Answer:
Most organisms that live in coral reef habitats are zooxanthellae.
Explanation:
zooxanthellae are the single-celled dinoflagellates that lives in mutual relationship with corals, jellyfish, and nudibranchs. These organisms have a mutualistic relationship between zooxanthellae and corals. Coral produces carbon dioxide and water in the process of cellular respiration while on the other hand, the zooxanthellae use this carbon dioxide and water to carry out photosynthesis for making their own food like plants so both the organisms get benefit from one another.
How would you explain why the North & South poles stay so cold, even when they're getting 24-hour sunlight?
Answer:
Use your own words, but look at explanation for example:
Explanation:
They are both so far away from the hemisphere line (which is where the warmth is) so they don't have warm temperatures at anytime of year, unlike in other places there can even be warm temperatures all year round.
In this lab, you will simulate birds with three different beaks. After watching the birds feed, you will remove fruit to simulate a change in the environment. What question are you answering by doing this observation?
Answer:
How does a change in food resources model the type of beaks in birds?
Explanation:
We know that phenotype results from the interaction of the genotype and the environment. Any change in the environment produces a change in the phenotype of the animals. By performing this experiment, we probably want to know the influence of the environment on animals. In this particular example, we change a source of food by removing fruit (which would be acting as the independent variable of the experiment) and evaluate its effects on the birds´ beak (the dependent variable). Which of the three different beaks increases their frequencies by removing the fruit, and which one decreases its frequency.
So here, the absence of fruit is acting as a selective ecological pressure on birds. It is modeling birds´ beaks and adapting animals to feed on some other resource.
Change in food resources ---> Selective ecological pressure.Change in beaks frequency----> Adaptative response.6.) the process by which large molecules are expelled from a cell
Answer:
b
Explanation:
Which sequence represents the normal blood flow in pulmonary circulation?
Show photo of pulmonary circulation
Which of these minerals and mineral resources is composed of the remains of plants that lived and died millions of years ago? A. Coal B. Aluminum C. Salt D. Petroleum
Answer:
Option A.
Explanation:
Coal is the correct answer because the coal is an organic sedimentary rock. These are formed from the dead remains of plants that were buried millions of years back.
i need that answer quick pls thanks
Answer:
First answer
Explanation:
RNA contains Uracil instead of Thymine
How can electromagnetic waves be used to fight a forest fire?
Gamma ray images can show hot spots as radioactive areas.
Ultraviolet images can show hot spots as fluorescent areas.
X-ray images can show hot spots as white areas.
Infrared images can show hot spots as red areas.
Answer: the answer to this is D because these rays can show you where the fire is located even if it is enveloped in a cloud of gray and black smoke that prevents you from seeing it.
Explanation:
The electromagnetic waves be used to fight a forest fire should be option D. Infrared images can show hot spots as red areas.
Reason of why electromagnetic waves be used to fight?The gamma-ray images should represent hot spots just like the radioactive areas.
The ultraviolet images represent the hot spots just like the fluorescent areas.
Also, these rays should represent where the fire is located also the black smoke prevent you.
hence, The electromagnetic waves be used to fight a forest fire should be option D. Infrared images can show hot spots as red areas.
Learn more about electromagnetic waves here: https://brainly.com/question/20577643
ASAP GIVE BRAINLIEST- 100 points after answered
Two species of sea urchins adapted to live side by side on the sandy bottom of the sea floor. The two species appear to have the same diet—drift seaweeds and other bits of organic matter. They are able to adapt and to live in the same environment without competing with each other. How are they able to share habitat and food resources?
Two species of sea urchins live practically side-by-side in sandy bottoms. The two species appear to have the same diet: drift seaweeds and other bits of organic matter. They can live in the same environment without competing.
As it compels them to live in the same environmental surroundings so the characteristics of living nature also get developed as their current following situation that's helping them to get the same food & habitat.
Both species of sea urchins share the same habitat and food resources by separating their niches a little bit differently from one another.
What do you mean by Habitat?Habitat may be defined as a type of native environment for which a particular species is best adapted due to natural selection.
Competitive exclusion leads to the elimination of any one species until they do not share different niches.
Therefore, both species of sea urchins share the same habitat and food resources by separating their niches a little bit differently from one another.
To learn more about Niches, refer to the link:
https://brainly.com/question/17643283
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how do genetics define the appearance of an organism?
Can somebody please answer this quickly?pleaseeeeee
in cellular respiration where do the products go?
Answer:
The products of cellular respiration are carbon dioxide and water. Carbon dioxide is transported from your mitochondria out of your cell, to your red blood cells, and back to your lungs to be exhaled.
What are the three types of forests age and structure?
Answer:
Tropical rain forests grow around the equator in South America, Africa, and Southeast Asia, The temperature is stable year-round, around 27°C (60° Fahrenheit). As you can tell from the name, it rains a lot in these forests. Most tropical forests receive at least 200 cm (80 inches) of rain in a year. Tropical forests generally have a rainy and dry season. Temperate forests occur in the next latitude ring, in North America, northeastern Asia, and Europe, temperature ranges from -30 to 30°C (-22 to 86 F) and the forests receive 75-150 cm (30-60 in) of precipitation per year,
Explanation:
Anyone know this? Not sure if my answer is right
Answer:
I'm sure you right.
C.) Photosynthesis.Explanation:
I checked the chemical equation as well as the diagram, and it looks accurate.
The chemical equation for photosynthesis is:
6CO2+6H2O → C6H12O6+6O2.
So your answer is correct.
In plants, photosynthesis is used to convert light energy from sunlight into chemical energy (glucose).
Carbon dioxide, water, and light are used to make glucose and oxygen.
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Good luck foe.
Lb
I am made of many cells. My cells have an organized nucleus. I have two parents and eat only meat. Who am I?
A student is shown a slide of cells from a species of a producer
in a food web. The student observes that the cells have
chloroplasts. What conclusion about the food web is best
supported by these findings?
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A. The producers capture energy from sunlight.
B. The food web contains many herbivores and omnivores.
C. The food web is found in a terrestrial ecosystem.
D. The producers in the web are single-celled organisms.
Answer:
the producers capture energy from sunlight
Are all molecules compounds? Why or why not?
Answer:
While all compounds are molecules, not all molecules are compounds. A molecule is formed when two or more atoms of an element chemically join together.
Explanation:
Please HURRY I need the answer
Answer:
Answer is: D
Explanation:
What is the main function of the circulatory system?
A. making your eyes able to see
B. moving oxygen and nutrition to your cells and pulling waste away
C. bleeding if you are cut
Answer: It is answer B
Explanation:
Explanation:
the main function of the circulatory system is:
B. moving oxygen and nutrition to your cells and pulling waste away
1. Conduct Research Compare the Yellowstone wolf story with a situation in your
region where human activity that affected one species, or a couple of species,
resulted in a trophic cascade. Which aspects are similar to the Yellowstone story,
and which are different? Have researchers offered and tested hypotheses to explain
the changes?
Answer:
I can handle this task.
Explanation:
I have just tried to research on this.
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PLEASE HELP - While walking in the woods one day,you come across A strange object. You decided to investigate the object to determine if it's a living organism or not.Explain the characteristics you would look for to determine if the object you found is a living organism.
Which will cool down faster overnight, the water in the pool or the air above the pool? How do you know
Please help
What are some negative impacts of having this life cycle that might have contributed to a decline in the dragonfly population?
Answer:
Dragonflies are important for our environment.
Explanation:
Dragon flies belongs to the ancient family of insects. They are found on every parts of the world and have been from around 300 millions years ago. There are more than 5000 different species of them found in different parts of the world. Conserving dragonflies is important as they considered as a valuable environmental indicators.
Dragon flies are found in the areas where water is available and near grasslands. Their life cycle is an example of an incomplete metamorphosis. The dragon flies lays their eggs near the water or in the water. Dragon flies spends most of the life time as a nymph in the water where they turn into an adult and leave the water. The dragon flies rely on the aquatic ecosystems all through their life. Thus dragonflies are an important indicators of the environment and water quality.
Most of the life cycle of the dragon flies depend on the availability of water and its quality. Polluting water and destroying their habitat will result in the decline of the population of the dragon flies.
Please help!
List four physical characteristics necessary for life to exist. Of these four, which two explain the pattern of terrestrial biomes?
Answer: Factors affecting biome type include latitude, humidity, and elevation. Terrestrial biomes include the tropical rainforest, chaparral, and taiga.
Explanation:
have a great day
1. What is a lunar eclipse? *
5 points
a. when the moon is completely dark
b. when the side of the moon that faces the sun is illuminated and the other side is
completely dark
C. when the side of the moon that faces the sun is completely dark and the other side
is illuminated
Answer:
a lunar eclipse is when the sun and the moon align in the same place in FROUNT of earth
Answer:
An eclipse of the Moon (or lunar eclipse) can only occur at Full Moon, and only if the Moon passes through some portion of Earth's shadow.
Explanation:
what is a point of view?
Answer:
point of view is a particular attitude or way of considering a matter.
Explanation:
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where does transcription take place in eukaryotic cells
Answer:
Transcription occurs the nucleus of eukaryotic cells