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lisabon 2012 [21]
3 years ago
11

Whats the most abundant element in the atmosphere?

Biology
1 answer:
monitta3 years ago
4 0
The atmosphere is 78% Nitrogen, 29% Oxygen, 0.9% argon, and the remaining gasses (methane, CO2, Ozone...) only appear in trace amounts *this does not mean that there isn't a lot of these "trace" gases, the atmosphere is very very very big, and a few millionths of CO2 can wreck the whole thing. 
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Scientific research about the carbon cycle and global warming would be most valuable if the results
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Answer:

if the results are efficient in answering the problems raised in the research and if they manage to come to terms with the hypotheses.

Explanation:

As you may know, scientific research must be done through several steps that allow an experiment to be carried out in order to reach conclusions on a certain topic.

In research on the carbon cycle and global warming, it is necessary for the researcher to raise problems and questions about this topic, as well as to raise hypotheses that must be directly related to the results of the experiment. If the result of the experiment is efficient in answering the research problems and questions, in addition to being able to agree with the presented hypotheses, it means that the research has value within the scientific branch in which it fits, in addition to showing that the experiment was done correctly.

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A or C

Explanation:

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How do cells communicate in the body
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Cells communicate through their own language of chemical signals. Different compounds, such as hormones and neurotransmitters, act like words and phrases, telling a cell about the environment around it or communicating messages.
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The _____ horizon shown in figure 7-1 is most like the parent material?
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I believe it is number 3.

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What happens if the correct ligand binds to ligand-gated sodium channel in a post-synaptic neuron?
Maru [420]

Answer:

Post-synaptic neurons after receiving correct ligands called as neurotransmitter in correct amount generates action potential. This action potential may be inhibitory or accelatory.

Explanation:

Postsynaptic neuron :

These are the neurons that is present after the gap called synapse. These neurons after receiving correct ligands called as neurotransmitter in correct amount generates action potential. This action potential may be inhibitory or accelatory.

There are number of neurotransmitter. These includes

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Adrenergic: This neurotransmitter releases norepinephrine.

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