movement of people from one permanent home to another. This movement changes the population of a place. International migration is the movement from one country to another. ... People who move into another country are called immigrants .
The rate at which materials enter and leave the cell depends on the cells surface area
Your answer is: D) surface area
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I think the answer is renal medullae
Answer:
Gas Exchange
Explanation:
It is diffusion that occurs in moist membranes
