Question

Slash-and-burn agriculture affects global warming by ___________.
a. adding more methane gas to the environment, thereby increasing greenhouse gases
b. removing methane producers from the environment, thereby decreasing greenhouse gases
c. removing photosynthetic organisms from the environment, thereby increasing co2 in the environment
d. removing photosynthetic organisms from the environment, thereby decreasing co2 in the environment
e. no effect will be seen in global warming or greenhouse gases from this type of agriculture.

Answer 1

The correct answer is E. no effect. 

A is wrong because burning crops does not produce methane gas,
B is wrong because by cutting and burning your not removing methane gas either.
C is wrong because it is controlled agriculture, and will not impact the amount of Co2 in the atmosphere.
D is wrong because again it is controlled agriculture and has no impact on the level of Co2 in the environment.