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TOPIC: Ecology AIM: How are materials cycled through the environment?

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Presentation on theme: "TOPIC: Ecology AIM: How are materials cycled through the environment?"— Presentation transcript:

1 TOPIC: Ecology AIM: How are materials cycled through the environment?

2 Water Cycle Evaporation (L G) Condensation (G L) Transpiration (liquid evap from leaves) Precipitation (rain…)

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4 Precipitation Evaporation and Transpiration Condensation

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7 Carbon & Oxygen Cycle Involves photosynthesis & respiration Cellular Respiration Photosynthesis carbon dioxide oxygen

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10 Nitrogen Cycle Transfer of N from air to soil, to living things & back to air

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12 Nitrogen Cycle Nitrogen-fixing bacteria Nitrogen-fixing bacteria convert nitrogen gas to nitrates Animals eat plants (produce nitrogenous wastes = urea & ammonia) Plants use nitrates for protein synthesis

13 Decomposers Decomposers break down nitrogenous wastes and dead plants and animals release ammonia into soil Nitrifying bacteria Nitrifying bacteria convert ammonia into nitrates Plants use the nitrates OR Denitrifying bacteria Denitrifying bacteria converts nitrates to nitrogen gas

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