Overgrazing, overfarming, and the diversion of water for irrigation are significant causes of
a. deforestation
b. desertification
c. decreased agricultural production
d. shifting cultivation

South america is located within which hemisphere?

Find the equation of the line passing through the point (–1, 5) and perpendicular to the line 3x + y = 4.

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !