The term simple diffusion<span> refers to a process whereby a substance passes through a membrane without the aid of an intermediary such as a integral membrane protein. The force that drives the substance from </span>one<span> side of the membrane to the other is a concentration gradient. Hope this helps.</span>
The answer to the question is B
Answer:
If you're on EDGE 2021, it's NOT D.
I think it's A.
Answer:
<h3>1. producers releasing it as a product of photosynthesis </h3>
Explanation:
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