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- 1From:The Gale Encyclopedia of Science (Vol. 6. 6th ed.)Pollution can be defined as unwanted or detrimental changes in a natural system. Usually, pollution is associated with the presence of toxic substances in some large quantity, but pollution can also be caused by the...
- 2From:The Gale Encyclopedia of Science (Vol. 1. 6th ed.)The term blue revolution refers to the remarkable emergence of aquaculture as an important and highly productive agricultural activity. Aquaculture refers to all forms of active culturing of aquatic animals and plants,...
- 3From:The Gale Encyclopedia of Science (Vol. 1. 6th ed.)Bioaccumulation is the gradual build up over time of a chemical in a living organism. This occurs either because the chemical is taken up faster than it can be used, or because the chemical cannot be broken down for use...
- 4From:The Gale Encyclopedia of Science (Vol. 1. 6th ed.)Ammonification, in chemistry, is defined as the saturation with ammonia or any one of its compounds. Strictly speaking, ammonification refers to any chemical reaction that generates ammonia (NH3) as an end product (or...
- 5From:The Gale Encyclopedia of Science (Vol. 3. 6th ed.)The process by which a body of water becomes overly productive, i.e., overly loaded with nutrients and minerals, such as nitrogen and phosphorus, is called eutrophication. The major factors controlling eutrophication,...
- 6From:The Gale Encyclopedia of Science (Vol. 1. 6th ed.)An algal bloom is a sudden increase in the population of algae in a freshwater or marine habitat. It is caused by an enrichment in the nutrient content of the water known as eutrophication. High levels of nitrogen and...
- 7From:Yearbook of International Environmental LawC. Korea (1) International/Regional Governance Korea made a continued effort to improve regional and international governance in the protection of the environment and natural resources. First, Korea ratified two...
- 8From:Yearbook of International Environmental LawIV. OCEANS 2. Marine Pollution B. Vessel Source Pollution In regard to pollution of the marine environment caused by ships, the year was marked by a number of developments, the full effects of which might only...
- 9From:Congressional Research Service (CRS) Reports and Issue BriefsDecember 3, 2018 Overview U.S. oil and natural gas production has increased substantially since 2008 (Figure 1). These increases have important policy implications for energy markets, infrastructure, security, and...
- 10From:The New Dictionary of Cultural Literacy: What Every American Needs to Know (3rd ed.)The addition of harmful chemicals to natural water. Sources of water pollution in the United States include industrial waste, run-off from fields treated with chemical fertilizers, and run-off from areas that have been...
- 11From:Congressional Research Service (CRS) Reports and Issue BriefsThe Safe Drinking Water Act (SDWA), Title XIV of the Public Health Service Act, is the key federal law for protecting public water supplies from harmful contaminants. First enacted in 1974 and substantively amended in...
- 12From:Congressional Research Service (CRS) Reports and Issue BriefsUpdated January 20, 2006 SUMMARY Energy security, a major driver of federal energy efficiency programs in the past, came back into play as oil and gas prices rose late in the year 2000. The terrorist attack in...