world history 12 term 4

Question 1

global warming

Answer 1

a gradual increase in the overall temperature of the earth’s atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.

Question 2

AIDS

Answer 2

a disease in which there is a severe loss of the body’s cellular immunity, greatly lowering the resistance to infection and malignancy.

Question 3

HIV

Answer 3

is a virus that attacks the immune system, the body’s natural defense system.

Question 4

famine

Answer 4

extreme scarcity of food

Question 5

carbon dioxide

Answer 5

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration.

Question 6

carbon footprint

Answer 6

the amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.

Question 7

greenhouse gases

Answer 7

a gas that contributes to the greenhouse effect by absorbing infrared radiation, e.g., carbon dioxide and chlorofluorocarbons.

Question 8

fossil fuels

Answer 8

a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

Question 9

alternative fuels

Answer 9

a fuel other than gasoline for powering motor vehicles, such as natural gas, methanol, or electricity.

Question 10

pandemic illnesses

Answer 10

is the worldwide spread of a new disease