Part one of term paper
During the Industrial Revolution coal and other fossil fuels were used as a source of energy. They were burned and the gas given off was harmful to the atmosphere. Unknowingly factories burned fossil fuel causing what we call the greenhouse effect. Unfortunately, factories continue to burn these fuels. also causes acid rain. Acid rain is ...

Part two of term paper
... waste. has been known to cause ecological imbalances. DDT was used as an insecticide up until 1972. It almost wiped out the Bald Eagle population. It caused the birds to lay eggs so thin shelled eggs the eggs were unhatchable. Laws banned the use of DDT and also required the reduction of lead in gas. DDT is still used in developing countries on the malaria-carrying mosquito. Oil spills also have harmful effects, luckily chemicals can neutralize the oil before massive damage occurs. In 19 ...