Answer:
D. Animal cells would not have the materials needed to produce energy in cellular respiration.
Explanation:
20 percent available at the highest tropic level. There is less at the top of the food chain because it has ate things from possibly all areas of the food chain and each level is consuming from lower parts of the chain than it. So with the entire food chain eating on what the top eats there is gonna be less for the top
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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