biological need

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• Biological interaction — Biological interactions are the effects organisms in a community have on one another. In the natural world no organism exists in absolute isolation, and thus every organism must interact with the environment and other organisms. An organism s… …   Wikipedia

• Biological hydrogen production — is done in a bioreactor based on the production of hydrogen by algae. Algae produce hydrogen under certain conditions. In the late 1990s it was discovered that if algaeclarifyme are deprived of sulfur they will switch from the production of… …   Wikipedia

• biological clock — noun count 1. ) a system in the body that controls when certain regular activities happen, for example sleeping: BODY CLOCK 2. ) INFORMAL a woman s need to have children before she reaches a certain age and can no longer physically do so: She… …   Usage of the words and phrases in modern English

• Biological imperative — Articleissues citations missing = November 2007 OR = November 2007 rewrite = November 2007 tone = November 2007Biological imperatives are the needs of living organisms required to perpetuate their existence: to survive. include the following… …   Wikipedia

• Biological psychology — In psychology, biological psychology, also known as biopsychology, psychobiology, or behavioral neuroscience [http://www.m w.com/cgi bin/dictionary?sourceid=Mozilla search va=psychobiology Merriam Webster s Online Dictionary » Psychobiology] >]… …   Wikipedia

• need — I n. 1) to create a need 2) to feel a need 3) to fill, meet, obviate a need 4) to satisfy a need 5) to minister to smb. s needs 6) an acute, crying, desperate, dire, pressing, urgent need 7) a basic, fundamental; biological; emotional,… …   Combinatory dictionary

• Biological Weapons Convention — For other uses, see BWC (disambiguation). Biological Weapons Convention Signed April 10, 1972 Location London, Moscow, and Washington, D.C. Effective March 26, 1975 Condition Ratification by 22 states Parties 165 as of October 2011 (Complete… …   Wikipedia

• Biological small-angle scattering — Small angle scattering is a fundamental method for structure analysis of materials, including biological materials. Small angle scattering allows one to study the structure of a variety of objects such as solutions of biological macromolecules,… …   Wikipedia

• biological development — Introduction       the progressive changes in size, shape, and function during the life of an organism by which its genetic potentials (genotype) are translated into functioning mature systems (phenotype). Most modern philosophical outlooks would …   Universalium

• Biological type — In biology, a type is that which fixes a name to a taxon. Depending on the nomenclature code which is applied to the organism in question, a type may be a specimen, culture, illustration, description or taxon. For example, the Natural History… …   Wikipedia

• Biological Weapons Convention — ▪ international agreement formally,  Convention on the Prohibition of the Development, Production and Stockpiling of Bacteriological (Biological) and Toxin Weapons and on Their Destruction        international treaty that bans the use of… …   Universalium