A. volcanic eruptions

B. the amount of rainfall

C. the rising of warm air into the atmosphere

D. the absorption of heat from the earth’s interior.

A. When the earth surface absorb heat from the atmosphere.

B. When the earth surface absorb heat from the earth’s interior

C. When the upper atmosphere absorb heat from the outer space.

D. When the lower atmosphere absorb heat from the earth’s surface.

A. reforestation

B. illegal fishing

C. mining activities

D. incineration of garbage

A. Temperature increases

B. Temperature decreases

C. Water vapor condenses

D. Greenhouse effect occurs

A. Warming of water in the Atlantic Ocean.

B. Cooling of water in the Atlantic coast of the US.

C. Warming of water in the Pacific Ocean off the coast of South America.

D. Cooling of water in the tropical Pacific Ocean between the Tropic of Cancer and the Tropic of Capricorn

A. It is cooler than the average.

B. It is warmer than the average.

C. It is varied throughout the ocean.

D.It remains in the same temperature.

A. carbon dioxide, oxygen, fluorine

B. carbon dioxide, nitrogen, oxygen

C. carbon dioxide, methane, oxygen

D. carbon dioxide, methane, nitrous oxide

A. solar radiation

B. littering everywhere

C. hole in the ozone layer

D. carbon dioxide emissions

A. Always using cars when going even to short distance places.

B. Joining in tree planting activities whenever possible.

C. Rallying against the use of renewable energy.

D. Chopping down rainforests.

A. methane

B. water vapor

C. nitrous oxide

D. carbon dioxide