Photosynthesis and Carbon Cycle Crossword

123456789101112131415161718
Across
  1. 5. doing this to fossil fuels releases lots of carbon dioxide into the atmosphere
  2. 7. found in the molecules that make up living organisms
  3. 9. remove carbon dioxide from the air during photosynthesis
  4. 10. too much carbon in the air is ____________ the Earth
  5. 13. the layer surrounding the Earth in which carbon dioxide gas is found
  6. 15. producers use CO2, ______________ and sunlight to produce food and oxygen
  7. 16. the process by which producers turn light energy into chemical energy
  8. 17. fungi and bacteria that break down dead things
Down
  1. 1. the gas released by producers during photosynthesis
  2. 2. the carbon ____________ describes how carbon molecules move between the living and nonliving world
  3. 3. the energy source producers need to perform photosynthesis
  4. 4. ______________ fuels: the remains of dead organisms found inside the Earth and burned to release energy
  5. 6. carbon ________________ is the gas form (CO2) of carbon, found in the air
  6. 8. another word for breathing, it releases carbon dioxide into the air
  7. 11. organisms that release carbon dioxide when they exhale (breathe out)
  8. 12. the largest plants, these are known as "carbon sinks" because they remove so much carbon from the atmosphere
  9. 14. the process of photosynthesis is essential to life on Earth because it creates ______________ for food chains
  10. 18. the food made by producers during photosynthesis