The Difference in the Tint of the Waters Above the Continental

Multiple Choice

The difference in the tint of the waters above the continental shelf (greenish) and the deep blue of the open ocean is due to:

A) The refraction of light near the coastline.
B) The turbulence of shallow-water wave action.
C) The presence of large numbers of carnivorous fishes.
D) The shallow depth of the continental shelf out to the shelf break.
E) The high level of photosynthetic productivity.