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Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
Vocabulary and Cycles
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Vocabulary and Cycles

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  • 1. 2 important Earth cycles
    • The water cycle – the continuous circulation of water through the hydrosphere
  • 2. The water cycle
  • 3. Important steps
    • Evaporation – water turning to vapor
    • Condensation – vapor turning to water
    • Precipitation – water returning to earth
    • Transpiration – water leaving the leaves of plants
    • Runoff – water running downhill
    • Groundwater – underground water
  • 4. The Carbon Cycle
    • A biochemical cycle involving the element carbon
  • 5. The Carbon Cycle
  • 6. Important steps
    • Photosynthesis – plants take carbon from the atmosphere and convert it to sugar and oxygen
    • Respiration – converting oxygen to carbon dioxide
    • Carbon is also added to the atmosphere by burning fossil fuels
  • 7. Nitrogen Cycle
    • We use nitrogen to build amino acids – the building blocks for proteins
    • Nitrogen gas makes up 78% of the atmosphere, but it’s not in the form we need it to be in
    • Bacteria in the soil convert it into a form that is usable to humans
  • 8. The Nitrogen Cycle
  • 9. Important steps
    • Nitrogen fixation – bacteria thaqt live in the roots of plants convert nitrogen gas into ammonia
    • Bacteria in the soil convert ammonia to nitrates and nitrites
    • Producers use these to make protein
    • Consumers eat producers to get these proteins, then when we die, it gets put back into the soil
    • Denitrification – bacteria convert nitrates into nitrogen gas

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