dredging - the practice of deepening an existing waterway; also, a technique used for collecting bottom-dwelling marine organisms (e.g., shellfish) or harvesting coral, often causing significant destruction of reef and ocean-floor ecosystems.
drift-net fishing - done with a net, miles in extent, that is generally anchored to a boat and left to float with the tide; often results in an over harvesting and waste of large populations of non- commercial marine species (by-catch) by its effect of "sweeping the ocean clean".
ecosystems - ecological units comprised of complex communities of organisms and their specific environments.
effluents - waste materials, such as smoke, sewage, or industrial waste which are released into the environment, subsequently polluting it.
endangered species - a species that is threatened with extinction
either by direct hunting or habitat destruction.
freshwater - water with very low soluble mineral content; sources
include lakes, streams, rivers, glaciers, and underground aquifers.
greenhouse gas - a gas that "traps" infrared radiation in the lower atmosphere causing surface warming; water vapor, carbon dioxide, nitrous oxide, methane, hydrofluorocarbons, and ozone are the primary greenhouse gases in the Earth's atmosphere.
groundwater - water sources found below the surface of the earth often in naturally occurring reservoirs in permeable rock strata; the source for wells and natural springs.
Highlands Water Project - a series of dams constructed jointly by Lesotho and South Africa to redirect Lesotho's abundant water supply into a rapidly growing area in South Africa; while it is the largest infrastructure project in southern Africa, it is also the most costly and controversial; objections to the project include claims that it forces people from their homes, submerges farmlands, and squanders economic resources.
Inuit Circumpolar Conference (ICC) - represents the 125,000 Inuits of Russia, Alaska, Canada, and Greenland in international environmental issues; a panel convenes every three years to determine the focus of the ICC; the most current concerns are long-range transport of pollutants, sustainable development, and climate change.