Unit 4 Vocabulary

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Across
  1. 4. Organisms break down organic compounds, releasing CO2 and energy
  2. 5. Plants use sunlight, water, and CO2 to create organic compounds (sugars) for energy
  3. 7. Trapping of heat by atmospheric gases like CO2, crucial for warming, but excess CO2 causes warming
  4. 8. Carbon-rich remains of ancient organisms(coal, oil, gas)
  5. 9. The continuous movement of carbon atoms
Down
  1. 1. Bacteria and fungi break down dead organic matter, returning carbon to the soil and atmosphere
  2. 2. The layer of gases, including CO2, surrounding Earth
  3. 3. Converting inorganic carbon (CO2) into organic compounds
  4. 6. Burning organic matter (wood, fossil fuels) releases large amounts of CO2
  5. 10. A reservoir that releases more carbon than it absorbs