Which of the following statements is not true about the open ocean?

a. the open ocean has low levels of nutrients.
b. organisms in the deep ocean are exposed to frigid temperatures and total darkness.
c. the open ocean begins at the low-tide mark and extends to the end of the continental shelf.
d. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone.

how does the intertidal zone differ from the near shore zone in marine ecosystem?

a. organisms in the intertidal zone receive less light than organisms in the near shore zone.
b. organisms in the intertidal zone experience greater extremes of temperature and wave action than organisms in the near shore zone.
c. water depth in the intertidal zone is greater than in the near shore zone.
d. photosynthetic organisms occur in the intertidal zone but not in the near shore zone.