THE PHOSPHORUS CYCLE. Importance of phosphorus: in DNA and RNA, bones, teeth, shells, cell membranes.

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Presentation transcript:

THE PHOSPHORUS CYCLE

Importance of phosphorus: in DNA and RNA, bones, teeth, shells, cell membranes

Sources not found in the atmosphere comes from weathering of rocks phosphate ions dissolve in water

Plants and animals plants absorb phosphate from the soil animals eat plants decomposition returns phosphates to the soil

Fungi mycorrhizae are fungi that live in plant roots (symbiotic) makes phosphate more soluble so plants can use it

Ocean sediments remains of aquatic animals form sediments and eventually rock

Human influences phosphate is mined to make fertilizers and detergents fertilizers, detergents, and sewage add phosphates to waterways too much phosphorus is harmful to aquatic ecosystems