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TEAS ScienceWater, carbon, nitrogen

Biogeochemical CyclesATI TEAS 7 cheat sheet

Water, carbon, nitrogen

7 key facts Reviewed Oct 2026
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Water Cycle

  • Evaporation → condensation → precipitation → collection
  • Transpiration adds water from plants

Carbon Cycle

  • Photosynthesis removes CO₂; respiration returns it
  • Combustion and decomposition also release it

Nitrogen Cycle

  • Nitrogen fixation by bacteria makes it usable
  • Plants absorb nitrates; decomposers return nitrogen to soil

Why

  • Matter cycles; energy flows one way and is lost as heat
Key takeaway

Water, carbon, nitrogen

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