A change in global or regional climate patterns.

Economic development that is conducted without depletion of natural resources.

The amount of carbon dioxide released into the atmosphere as a result of the activities of a particular individual, organization, or community.

Energy from a source that is not depleted when used, such as wind or solar power.

Chemical waste material capable of causing death or injury to life.

It's a process that occurs when gases in Earth's atmosphere trap the Sun's heat.

A gradual increase in the overall temperature of the earth's atmosphere.

A layer in the earth's stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.