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

Explore how materials are cycled through the environment with a focus on the water, carbon, and nitrogen cycles. Learn about processes like evaporation, condensation, photosynthesis, cellular respiration, and nitrogen fixation. Discover the role of bacteria, plants, animals, and decomposers in these cycles.

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

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  1. TOPIC: EcologyAIM: How are materials cycled through the environment?

  2. Water Cycle Evaporation (L  G) Condensation (G L)

  3. Transpiration (liquid evap from leaves) • Precipitation (rain…)

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

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

  6. Nitrogen-fixing bacteria convert nitrogen gas to nitrates

  7. Plants use nitrates for protein synthesis

  8. Animals eat plants (produce nitrogenous wastes = urea & ammonia)

  9. Decomposers break down nitrogenous wastes and dead plants and animals  release ammonia into soil

  10. Nitrifying bacteria convert ammonia into nitrates

  11. Plants use the nitrates OR • Denitrifying bacteria converts nitrates to nitrogen gas

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