Given: abc, sb is perpendicular to ac, and measure of ange 1 = measure or angle 2 prove: measure of angle 3=measure of angle 4

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