Global warming: 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.

Deforestation: the action of clearing a wide area of trees.

Protected area: a clearly defined geographical space, recognised, dedicated and managed, through legal or other effective means, to achieve the long term conservation of nature.

Frozen: (of a liquid) having turned into ice as a result of extreme cold.

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

Carbon dioxide: a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

Burning: on fire.

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

Desertification: the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.

Untreated sewage: waste water and excrement conveyed in sewers.

Air pollution: the presence in or introduction into the air of a substance which has harmful or poisonous effects.

coastal flooding: when the coast is flooded by the sea.

Endangered species: a species of animal or plant that is seriously at risk of extinction.