The coastal ocean is home to kelp forests and coral reefs. Which factor explains why the coastal ocean tends to be more productive than waters of similar depths in the open ocean?

A. warm water temperature
B. brightness of the water
C. low salinity of the water
D. nutrients supplied by runoff from the land

D.nutrients supplied by runoff from the land

Explanation:

Coastal ocean seems to be more productive than the waters of the similar height in the open ocean due to ample availability of water, sunlight, and nutrients.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.