A
A is correct for this problem
Answer:
78 percent
Explanation:
The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.
The way that neurons communicate is through synaptic vesicles which release neurotransmitters.
<h3>What are Neurons?</h3>
The neurons are the basic structural and functional unit of the nervous system.
These neurons are able to communicate to each other through the neurotransmitters that are released by synaptic vesicles.
The neurotransmitters are chemical messengers that carry chemical signals from one neuron to another upon the generation of an action potential.
The synaptic vesicles are the organelles that house these neurotransmitters.
Learn more about neurons here:
brainly.com/question/13061744
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All the deserts are found at 30<span>°N because
</span><span>Hot air from the equator rises, then cools, moisture is lost, and the dry air comes down at 30 degrees north and south</span>
