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Nutrient Cycles

Nutrient Cycles. CARBON. WATER. NITROGEN. PHOSPHOROUS. The Water Cycle. HOME. Precipitation. Water that has condensed in the air forms clouds Drops fall to Earth and accumulate in oceans and lakes. Back to the Water Cycle. Evaporation. Using Water. Using Water.

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Nutrient Cycles

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  1. Nutrient Cycles CARBON WATER NITROGEN PHOSPHOROUS

  2. The Water Cycle HOME

  3. Precipitation • Water that has condensed in the air forms clouds • Drops fall to Earth and accumulate in oceans and lakes Back to the Water Cycle Evaporation Using Water

  4. Using Water • Plants and animals need water to live • Water is pulled from bodies of water or from the ground (groundwater) Back to the Water Cycle Precipitation Waste

  5. Waste • Plants and animals return water to environment through transpiration • Animals return water to ground and bodies of water through urine Back to the Water Cycle Using Water Evaporation

  6. Evaporation • Water from oceans, lakes, and other bodies of water re-enters the atmosphere through evaporation Back to the Water Cycle Waste Precipitation

  7. The Carbon Cycle HOME

  8. Photosynthesis • Plants use CO2 from the atmosphere to make high-energy carbon molecules Respiration Gas Exchange Pollution Back to the Carbon Cycle Metabolism

  9. Metabolism • Organisms use high energy carbon molecules for growth Respiration Back to the Carbon Cycle Photosynthesis Waste Decomposition

  10. Respiration • CO2 is released through aerobic respiration (breathing, for example) Back to the Carbon Cycle Metabolism Decomposition Photosynthesis

  11. Waste • Carbonates released into ground and water supply Metabolism Photosynthesis Decomposition Back to the Carbon Cycle Gas Exchange

  12. Gas Exchange • CO2 is exchanged between the air and water Back to the Carbon Cycle Waste Photosynthesis

  13. Decomposition • When organisms die and decay, the carbon molecules in them enter the soil. • Microorganisms break down the molecules, releasing CO2 Back to the Carbon Cycle Photosynthesis Metabolism Pollution

  14. Pollution • Remains of dead organisms are converted into fossil fuels (over millions of years!) • Combustion of fossil fuels and wood releases CO2 Back to the Carbon Cycle Metabolism Using Water

  15. The Nitrogen Cycle HOME

  16. Nitrogen Fixation • Lightning and bacteria convert atmospheric nitrogen into nitrates (NO3) and ammonia (NH3) Back to the Nitrogen Cycle Protein Production Return to Atmosphere

  17. Protein Production • Plants use nitrogen molecules to make amino acids Back to the Nitrogen Cycle Nitrogen Fixation Conversion

  18. Conversion • Consumers convert plant proteins to animal proteins Back to the Nitrogen Cycle Protein Production Waste

  19. Waste • Decomposers break down animal and plant matter into nitrogen compounds Back to the Nitrogen Cycle Return to Atmosphere Pollution Conversion

  20. Return to Atmosphere • Nitrogen compounds break down into gas and return to air Back to the Nitrogen Cycle Waste Nitrogen Fixation

  21. Runoff • Runoff of nitrates in fertilizers enters groundwater and soil Back to the Nitrogen Cycle Protein Production

  22. Pollution • Nitrous Oxide from burning fossil fuels falls as Nitric Acid in rainwater Back to the Nitrogen Cycle Waste

  23. Question 1: What would happen to primary producers and consumers if nitrogen-fixing bacteria were removed from the ecosystem?

  24. Question 2: Grandma Johnson had very sentimental feelings toward Johnson Canyon, Utah, where she and her late husband had honeymooned long ago. Her feelings toward this spot were such that upon her death she requested to be buried under a creosote bush overlooking the canyon. Trace the path of a CARBON atom from Grandma Johnson’s remains to where it could become part of a hawk. Note: A hawk is a carnivore, but it did NOT dig up and consume Grandma Johnson’s remains!!!

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