Although We Have Explored Only a Small Portion of the World's

Although we have explored only a small portion of the world's oceans,general patterns in marine biodiversity observed include:

A) Ecological services in marine ecosystems are valued at twice that of terrestrial ecosystems.
B) Biodiversity is greater in costal areas than in the open sea.
C) The greatest marine biodiversity occur in estuaries, coral reefs and deep-ocean floor
D) Biodiversity is greater in bottom region than the surface regions of the ocean.
E) All of these answers.