biogeochemical cycle

[ bī′ō-jē′ō-kĕm′ĭ-kəl ]

The flow of chemical elements and compounds between living organisms and the physical environment. Chemicals absorbed or ingested by organisms are passed through the food chain and returned to the soil, air, and water by such mechanisms as respiration, excretion, and decomposition. As an element moves through this cycle, it often forms compounds with other elements as a result of metabolic processes in living tissues and of natural reactions in the atmosphere, hydrosphere, or lithosphere. See more at carbon cycle nitrogen cycle.

Words nearby biogeochemical cycle

biogenesis, biogenetic law, biogenetics, biogenic, biogenic amine, biogeochemical cycle, biogeochemistry, biogeography, biographee, biographer, biographical

单词	biogeochemical cycle
释义	biogeochemical cycle [ bī′ō-jē′ō-kĕm′ĭ-kəl ] The flow of chemical elements and compounds between living organisms and the physical environment. Chemicals absorbed or ingested by organisms are passed through the food chain and returned to the soil, air, and water by such mechanisms as respiration, excretion, and decomposition. As an element moves through this cycle, it often forms compounds with other elements as a result of metabolic processes in living tissues and of natural reactions in the atmosphere, hydrosphere, or lithosphere. See more at carbon cycle nitrogen cycle. Words nearby biogeochemical cycle biogenesis, biogenetic law, biogenetics, biogenic, biogenic amine, biogeochemical cycle, biogeochemistry, biogeography, biographee, biographer, biographical The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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