Which of the following is the BEST argument for how to control beach erosion? A

A sand dune should be constructed because it forms quickly.

B

A levee should be constructed because it drains the water away.

C

A dam should be constructed because it will hold the water back.

D

A jetty should be constructed because it sticks out into the ocean.

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. 

Water enters the atmosphere through photosynthesis.