BIO 102 - Notes - Ecology - ecology the study of the...

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ecology the study of the interrelationships between organisms and their biotic (living) and abiotic (non-living) environments atmosphere the earth's envelope of air hydrosphere the earth's envelope of water lithosphere the earth's envelope of minerals and rock biosphere the earth's envelope of living things (where all three spheres overlap) biome a major ecological community type deciduous forest coniferous forest (taiga) grasslands deserts some of the world's many biomes tundra wetlands population one kind of a species in one place at a time population density the number of an organisms in a population in an amount of space ecosystem the complex of a community of organisms and its environment habitat the environment in which organisms live (the community) niche an organism's position in the food web, symbiotic relationships, area of living in the habitat, etc. matter anything that has mass and takes up space energy the ability to do work (i.e., move a distance) Law of Conservation of Matter matter is neither created nor destroyed, but only changed in form First Law of Thermodynamics energy can neither be created nor destroyed, but only changed Second Law of Thermodynamics
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