Which government agency would you expect to be most concerned with the impacts of pollution?

Probably the U.S. Environmental Protection Agency also known as the EPA.  They are charged with protecting people and the environment by enforcing regulations that prevent pollution.  If they find any violation committed they can impose sanctions and fines as well as imprisonment depending on the nature of the offense.

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

answer; (phospholipid);