According to the Gaia hypothesis, oxygen is removed from the atmosphere by * a. Methane b. Plant photosynthesis c. Carbon Dioxide d. ozone 40.
(oxygen; is removed; from the atmosphere; by * a. Methane b. Plant photosynthesis c. Carbon Dioxide d. ozone 40) (photosynthesis c. Carbon Dioxide d. ozone; [is] Plant [of]; Methane b.)
oxygen photosynthesis c. Carbon Dioxide d. ozone
is removed [is] Plant [of]
from the atmosphere by * a. Methane b. Plant photosynthesis c. Carbon Dioxide d. ozone 40
Methane b.