multicellular insulation

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• integument — /in teg yeuh meuhnt/, n. 1. a natural covering, as a skin, shell, or rind. 2. any covering, coating, enclosure, etc. [1605 15; < L integumentum a covering. See IN 2, TEGUMENT] Syn. 1. cortex, involucre, involucrum. * * * Covering of the body,… …   Universalium

• Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …   Wikipedia

• angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

• animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …   Universalium

• bryophyte — bryophytic /bruy euh fit ik/, adj. /bruy euh fuyt /, n. Bot. any of the Bryophyta, a phylum of nonvascular plants comprising the true mosses and liverworts. [1875 80; < NL Bryophyta name of the group; see BRYO , PHYTE] * * * Any of the green,… …   Universalium

• Planetary habitability — is the measure of a planet s or a natural satellite s potential to develop and sustain life. As the existence of life beyond Earth is currently uncertain, planetary habitability is largely an extrapolation of conditions on Earth and the… …   Wikipedia

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• Sexual selection — This article is about the evolutionary concept. For the selection of the sex of offspring, see sex selection. Goldie s Bird of paradise: Ornamented male above; female below. Paradesia decora by John Gerrard Keulemans (d.1912) Sexual selection, a… …   Wikipedia

• Terraforming — The terraforming (literally, Earth shaping ) of a planet, moon, or other body is the hypothetical process of deliberately modifying its atmosphere, temperature, surface topography or ecology to be similar to those of Earth to make it habitable by …   Wikipedia

• Greenhouse gas — Simple diagram of greenhouse effect. A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect.[1] …   Wikipedia