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

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Presentation on theme: "THE PHOSPHORUS CYCLE. Importance of phosphorus: in DNA and RNA, bones, teeth, shells, cell membranes."— Presentation transcript:

1 THE PHOSPHORUS CYCLE

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

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

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

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

6 Ocean sediments remains of aquatic animals form sediments and eventually rock

7 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

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