Algal beds contribute very little to Earth's total net primary production because they are limited by
A) insufficient light.
B) oxygen depletion.
C) insufficient phosphorus.
D) being at very low latitudes.
E) being a tiny fraction of Earth's surface.

Question

Quizplus · Accepted Answer

Algal beds, despite their high productivity per unit area, cover a very small fraction of Earth's surface compared to terrestrial ecosystems and the vast open oceans. This limited coverage means their total contribution to Earth's net primary productivity is relatively small.

Algal Beds Contribute Very Little to Earth's Total Net Primary