Primary productivity in terrestrial ecosystems is highest at the equator because of:
A)high levels of direct sunlight.
B)high levels of rainfall.
C)relatively constant temperature.
D)All of the other answer choices contribute to high productivity.

Question

Quizplus · Accepted Answer

All of the other answer choices contribute to high productivity. The high levels of direct sunlight and relatively constant temperature provide ideal conditions for photosynthesis to occur, while the high levels of rainfall ensure that there is enough water available for plant growth. Together, these factors contribute to high primary productivity in terrestrial ecosystems at the equator.

Primary Productivity in Terrestrial Ecosystems Is Highest at the Equator