How much of the energy that reaches Earthʹs outer atmosphere from the sun is available for photosynthesis in plants at Earthʹs surface?

Question

Quizplus · Accepted Answer

Only about 1% of the energy that reaches Earth's outer atmosphere from the sun is available for photosynthesis in plants at Earth's surface. The rest is either absorbed by the atmosphere, reflected back into space, or used in other processes.

How Much of the Energy That Reaches Earthʹs Outer Atmosphere