Overfishing: deplete the stock of fish in (a body of water) by too much fishing.

Climate change: a change in global or regional climate patterns, in particular a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of f

Acid rain: rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which con

Untreated sewage: waste water and excrement conveyed in sewers.

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.

Solid waste: eans any garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or air pollution control facility and other discarded material, resulting from industrial, commercial, mining, and agricultural

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

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

Burning: on fire.

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

atmosphere: the envelope of gases surrounding the earth or another planet.

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