In OA, by limiting the number of fish caught does not have any connection with the waste released. Its totally different idea.
In OB, pond is still a part of environment. Pond too have its own habitat and no mater if the company release less waste or too much waste, it still affect the environment.
In OD, by avoiding boating we dont have much to do. Still there is no correlation with redcing the waste released.
d, because it takes in glucose (chemical energy) and created atp(chemical energy). photosynthesis is similar but it uses light energy instead of chemical energy.
