I believe the answer is C. because producers aren't needed much in the ocean <span />
If hunted and sold, animals will have a lower chance of reproducing apart from not being there themselves, decreasing their population.
Having less species inhabiting an area, means less food for some predators. Which means that competition will occur among preators since food will be scarce.
Answer:

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They maintain ecological balance by preventing deserfication
Answer:
In the given case, the manipulation made by the researchers is that they would have placed the cells in an environment exhibiting lower solute concentration in comparison to the concentration of solute present within the cells.
When the cells are put in a solution that contains lower solute concentration, that is, in the hypotonic solution then the flow of water will take place from the outside environment to the cell within by the process of osmosis, which will eventually result in the swelling of the cells. Thus, there will be an increase in the size of the cells.