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Answer:
Pollen from a plant is a biotic factor.
Explanation:
The reason why pollen is a biotic factor is because the pollen has life and it is basically a living cell which can give life to a flower.
Radioactive elements are useful for the study of the biological system because of the unique properties which they possess. For instance isotopes of radioactive elements can be used to label a specific molecule in order to be able to follow the movement of this molecule as it navigates through the human system.
<h2>The correct answer is <u>it will decrease.</u></h2>
Answer:
When a neural impulse reaches the end of an axon, it causes the tiny oval sacs at the end of the axon to release chemicals called neurotransmitter.
