Ethology is the correct answer.
Answer:
Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in.
Answer:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. ... Movement across a selectively permeable membrane can occur actively or passively. For example, water molecules can move passively through small pores on the membrane.
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first sentence and last sentence
Answer:
Answer islimiting factor.
Explanation:
A limiting factor is anything that constrains a population's size and slows or stops it from growing.
