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This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Water pollution is a major global environmental problem because it can result in the degradation of all aquatic ecosystems – fresh, coastal, and ocean waters. [75] The specific contaminants leading to pollution in water include a wide spectrum of chemicals , pathogens, and physical changes such as elevated temperature.
Also Gause's law. A biological rule which states that two species cannot coexist in the same environment if they are competing for exactly the same resource, often memorably summarized as "complete competitors cannot coexist". coniferous forest One of the primary terrestrial biomes, culminating in the taiga. conservation biology The study of Earth's biodiversity with the aim of protecting and ...
Water resources, such as lakes and aquifers, are usually renewable resources which naturally recharge (the term fossil water is sometimes used to describe aquifers which do not recharge). Overexploitation occurs if a water resource, such as the Ogallala Aquifer , is mined or extracted at a rate that exceeds the recharge rate, that is, at a rate ...
water entitlement - the entitlement, as defined in a statutory water plan, to a share of water from a water source. Water Footprint - the total volume of freshwater that is required in a given period to perform a particular task or to produce the goods and services consumed at any level of the action hierarchy.
A basic guide for the effect of environment on decomposition is given as Casper's Law (or Ratio): if all other factors are equal, then, when there is free access of air a body decomposes twice as fast as if immersed in water and eight times faster than if buried in the earth. Ultimately, the rate of bacterial decomposition acting on the tissue ...
In geology, degradation refers to the lowering of a fluvial surface, such as a stream bed or floodplain, through erosional processes. [ 1 ] [ 2 ] Degradation is the opposite of aggradation . Degradation is characteristic of channel networks in which either bedrock erosion is taking place, or in systems that are sediment -starved and are ...
Degradation (telecommunications), of an electronic signal; Biodegradation of organic substances by living organisms; Environmental degradation in ecology; Land degradation, a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land; Polymer degradation, as plastics age