About __________ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds?
A. 10%
B. 20%
C. 30%
D. 40%
About __________ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds?
A. 10%
B. 20%
C. 30%
D. 40%