Step-by-step explanation:
Responses may vary but should include some or all of the following information: Humans alter their environment in many ways. We burn fossil fuels to produce electricity and to power cars, airplanes, and trains. We also clear land to build businesses, homes, and shopping centers, and to grow food. We cut down forests, and we hunt or raise animals for food. Finally, we divert rivers to store water in reservoirs and to irrigate farmland.