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Ecology

Ecology. Nutrient Cycles. Cycling maintains homeostasis (balance) in the environment. 3 cycles to investigate: 1. Water cycle 2. Carbon cycle 3. Nitrogen cycle. Water cycle- Evaporation, transpiration, condensation, precipitation. Water cycle-. Carbon cycle-

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Ecology

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  1. Ecology

  2. Nutrient Cycles Cycling maintains homeostasis (balance) in the environment. • 3 cycles to investigate: 1. Water cycle 2. Carbon cycle 3. Nitrogen cycle

  3. Water cycle- • Evaporation, transpiration, condensation, precipitation

  4. Water cycle-

  5. Carbon cycle- • Photosynthesis and respiration cycle carbon and oxygen through the environment.

  6. Carbon cycle-

  7. Nitrogen cycle- Atmospheric nitrogen (N2) makes up nearly 78%-80% of air. Organisms can not use it in that form. Lightning and bacteria convert nitrogen into usable forms.

  8. Nitrogen cycle- Only in certain bacteria and industrial technologies can fix nitrogen. Nitrogen fixation-convert atmospheric nitrogen (N2) into ammonium (NH4+) which can be used to make organic compounds like amino acids. N2 NH4+

  9. Nitrogen cycle- Nitrogen-fixing bacteria: Some live in a symbiotic relationship with plants of the legume family (e.g., soybeans, clover, peanuts).

  10. Nitrogen cycle- • Some nitrogen-fixing bacteria live free in the soil. • Nitrogen-fixing cyanobacteria are essential to maintaining the fertility of semi-aquatic environments like rice paddies.

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