2A - Leah Whetzel

12345678910111213141516171819
Across
  1. 6. this is when there are too many nutrients (nitrogen) in waterways, which makes oxygen less
  2. 8. this is needed to transform nitrogen into a usable form for plants and animals
  3. 10. this sphere includes all water on Earth
  4. 13. gravity causes this to fall to Earth's surface when clouds become too heavy with liquid
  5. 16. this can flow into waterways if too many people use it to grow plants
  6. 17. animals release carbon dioxide in the atmosphere when they exhale
  7. 18. this process is when plants absorb carbon dioxide from the atmosphere and change the carbon into carbohydrates
  8. 19. liquid water from plant leaves changes to water vapor because of the Sun's heat
Down
  1. 1. this cycle relies on the sun and gravity to move through and around Earth
  2. 2. this sphere includes all living organisms, bacteria, and fungi
  3. 3. this is the change from water liquid to water vapor due to the Sun's heat
  4. 4. this is the largest reservoir of nitrogen
  5. 5. this is the largest reservoir of carbon
  6. 7. this element is needed for plants and animals to make proteins, amino acids and DNA
  7. 9. magma is part of which sphere
  8. 11. occurs when water vapor turns into liquid water because of the cold atmosphere
  9. 12. these contain carbon, so when burned, they add carbon dioxide into the atmosphere
  10. 14. this and bacteria break the nitrogen gas bonds so that nitrogen can bond to other elements
  11. 15. this term is when nitrogen is changed by bacteria to allow for plants to consume the nitrogen