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Cycles Water, Carbon, Nitrogen Oxygen and Phosphorus.

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Presentation on theme: "Cycles Water, Carbon, Nitrogen Oxygen and Phosphorus."— Presentation transcript:

1 Cycles Water, Carbon, Nitrogen Oxygen and Phosphorus

2 Water (hydrologic) Cycle  Plants absorb water from the soil  Transpiration and respiration return water to the atmosphere  Precipitation returns water to the soil  Nonmetal oxides in the atmosphere combine with water to form acid rain  Plants absorb water from the soil  Transpiration and respiration return water to the atmosphere  Precipitation returns water to the soil  Nonmetal oxides in the atmosphere combine with water to form acid rain

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4 The Carbon Cycle Carbon is fixed by plants Carbon is fixed by plants CC – 6 CO H 2 O  C 6 H 12 O O 2 Carbon is given off by consumers Carbon is given off by consumers CC – C 6 H 12 O O 2  6 CO H 2 O Organisms containing carbon form fossil fuels Organisms containing carbon form fossil fuels Burning fossil fuels releases carbon Burning fossil fuels releases carbon CC – 2 C 8 H O 2  16 CO H 2 O Carbon is fixed by plants Carbon is fixed by plants CC – 6 CO H 2 O  C 6 H 12 O O 2 Carbon is given off by consumers Carbon is given off by consumers CC – C 6 H 12 O O 2  6 CO H 2 O Organisms containing carbon form fossil fuels Organisms containing carbon form fossil fuels Burning fossil fuels releases carbon Burning fossil fuels releases carbon CC – 2 C 8 H O 2  16 CO H 2 O

5 Carbon Cycle

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7 Arctic Carbon Cycling

8 The Nitrogen Cycle  Bacteria fix nitrogen from the air  Consumers and producers incorporate nitrogen into their tissues  Nitrogen can be fixed industrially from the air  Production of ammonia  Decay processes return nitrogen to the air  Nitrogen from fertilizers may contaminate water sources  Bacteria fix nitrogen from the air  Consumers and producers incorporate nitrogen into their tissues  Nitrogen can be fixed industrially from the air  Production of ammonia  Decay processes return nitrogen to the air  Nitrogen from fertilizers may contaminate water sources

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10 Aquarium Nitrogen Cycle

11 The Oxygen Cycle is produced Oxygen is produced by photosynthesis 6 O 2 – 6 CO H 2 O  C 6 H 12 O O 2 – – The largest chemical process on earth! is sequestered Oxygen is sequestered by respiration 6 O 2 – C 6 H 12 O O 2  6 CO H 2 O

12 6 O 2 6 CO H 2 O  C 6 H 12 O O 2 6 O 2 C 6 H 12 O O 2  6 CO H 2 O

13 The Phosphorus Cycle The element phosphorus (P)is released in the form of ionic phosphate (PO 4 3- ) – Weathering of rock, mining, some detergents and fertilizers Phosphate is taken up by plants and fungi Consumers absorb phosphate from plants Decomposers return phosphate to soil Phosphate leaches into water supply – May form new phosphate containing rock The element phosphorus (P)is released in the form of ionic phosphate (PO 4 3- ) – Weathering of rock, mining, some detergents and fertilizers Phosphate is taken up by plants and fungi Consumers absorb phosphate from plants Decomposers return phosphate to soil Phosphate leaches into water supply – May form new phosphate containing rock

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