Biogeochemical Cycles

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Biogeochemical Cycle

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A pathway by which a chemical substance moves through both biotic and abiotic compartments of Earth.

The movement of chemical elements through living (bio), nonliving (geo), and chemical (chemical) parts of Earth.

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Decomposition

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The process by which organic substances are broken down into simpler organic matter.

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Human Impact

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The effect of human activities on the environment and ecosystems.

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Assimilation

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The process by which organisms take in elements and incorporate them into their bodies.

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Evaporation

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The process by which water changes from a liquid to a gas or vapor.

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Transpiration

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The process by which water vapor released from plant leaves.

"Plant Sweat" (perspiration is human sweat)

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Condensation

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The process by which water vapor in the air is changed into liquid water.

Cloud formation. Water cools.

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Precipitation

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Any form of water - liquid or solid - falling from the sky, including rain, sleet, snow, and hail.

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Infiltration

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The process by which water on the ground surface enters the soil.

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Runoff

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The flow of water, from rain, snowmelt, or other sources, over land into water bodies.