Studies Done Between 1960 and 1994 Showed an Increased Oscillation

Multiple Choice

Studies done between 1960 and 1994 showed an increased oscillation in seasonal levels of atmospheric CO₂.Which factor might be implicated in these increases?

A) Longer growing seasons,leading to greater total summer photosynthesis
B) Longer growing seasons,leading to greater photosynthesis in the tropics
C) Increased global use of nitrogen fertilizers,leading to more eutrophication
D) More global droughts,leading to worldwide decreases in photosynthesis
E) More severe storms,leading to greater variations in photosynthesis and respiration