Aman wearing warm clothes in a cold place would be an example of how humans a. adapt to their environment. b. affect their environment. c. can change their environment. d. choose where to live.

Afarmer who is grown corn for the past five years notices in the sixth year that the his harvest is significantly smaller, despite an increase in labor on the farm. the following year, the harvest continue to decline. which of the following explanations most plausibly accounts for the reduction in corn yield? a) soil degradation b) desalinization c) better irrigationd) terracing