Regarding the Aquatic Ecosystem and its productivity, which statements are true?
a. Aquatic ecosystems generally have high productivity, contributing 70 percent of the whole biosphere’s productivity.
b. Low productivity in the ocean is a major limiting factor for aquatic life.
c. The aquatic ecosystem relies mainly on the GFC as the major conduit for energy flow.
d. The pyramid of biomass in the sea is generally inverted.
e. Zooplankton are the producers in a lake ecosystem.
