2 ways central America is saving rain forests

D, the answer is letter d. because even though fossil fuels take a very long time to form, they do form in the ground just like coal and others.

Answer decreased soil salinity;

Ithink its the 3rd one

Answer is b)eutrophication occurs when excess nutrients are present in aquatic ecosystems, resulting in the increased production of plant life and the subsequent decrease in the oxygen levels of the watereutrophication occurs when there are excess nutrients in a body of water. this results in plants having more food and reproducing  more, sometimes leading to more aquatic animal life as well. ultimately, this can reduce the oxygen level in the ecosystem.