This is because the frequency of of a wave is a number of repeating event per unit time.
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Explanation:
for stoma or stomata, In botany, a stoma, also called a stomate is a pore, found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange. The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the stomatal opening. others are up to u
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Ans: Central Nervous System
listen I'm only in 5th grade it's not know the answer to this how are you supposed to just be asking question like this what is this even meaning