Explanation: Succession is a series of progressive changes in the composition of an ecological community over time. In primary succession, newly exposed or newly formed rock is colonized by living things for the first time.
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A glucose molecule is too large to pass through a cell membrane via simple diffusion. Instead, cells assist glucose diffusion through facilitated diffusion and two types of active transport.
So the answer is B
Exchanging oxygen and carbondioxide between air and lungs because it just involves breathing system but everything else involves hormones.........
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It is one of the four layers that surround earth the other three are rock, water, air.
