Environment

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

Greenhouse effect

Answer 2

the trapping of the sun’s warmth in a planet’s lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet’s surface.

Question 3

Ecological footprint

Answer 3

An ecological footprint is the measure of total human impact on an ecosystem. Some people’s footprint is larger than others