What is the atmospheric concentration of carbon dioxide?
(a) 0.3 – 0.4%
(b) 3 – 4%
(c) 0.03 – 0.04%
(d) 0.003 – 0.004%
I had been asked this question by my college professor while I was bunking the class.
This question is from Factors Affecting Photosynthesis in division Photosynthesis in Higher Plants of Biology – Class 11