<span>Membrane receptor proteins relay signals between the cell's internal and external environments.
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Transport proteins move molecules and ions across the membrane.</span></span>
The ecosystem is everything that exists in a particular environment.
Answer:
I think it is A.
Explanation:
u could also do peas, sugar, and sunflower seeds
PLZ give me brainliest.
I have three but you can choose two out of them! Commensalism, Mutualism, and Parasitism<span>. (im so sorry if i get this wrong though!)</span>
