Answer:
It prevents harmful substances from entering a cell.
Explanation:
Answer: Passive diffusion or facilitated transport.
<span> It should absorb the same amount of energy, assuming that the two reactions are exactly opposite.
This is not my answer and the credit goes to the user "</span>Asst Prof" on Yahoo answers I was just merely bringing it to your attention.
A good way to know would be by going through each one.
A) This seems the most neutral course of action.
B) There have been many studies proving the negative effects of releasing aquaculture-raised fish back into environments. There are competition issues, overpopulation issues, etc.
C) This would cause the misplacement of potentially HUNDREDS of deep-sea life forms and would only cause more pollution issues in the water to find more non-renewable resources.
D) Natural gas is a convenient and expeditious source of energy. However, it is non-renewable.
I'd say most likely A, as it supports sustainability and not a non-renewable resource or (too severe) habitat destruction
