Author Question: Of the total solar energy reaching the Earth, ________ percent is fixed by photosynthesis. A) 80 ... (Read 102 times)

Bernana · **on:** Jul 13, 2018

Of the total solar energy reaching the Earth, ________ percent is fixed by photosynthesis.

A) 80
B) 40
C) 20
D) 10
E) less than 1

Question 2

Carbon dioxide and water and light combined to create carbohydrates is a vital portion of which cycle?

A) Oxygen
B) Hydrologic
C) Nitrogen
D) Carbon
E) Energy