science crossword puzzle meal project

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Across
  1. 1. Layer of gases
  2. 5. A person or thing that eats something
  3. 9. A layer of water on the earth
  4. 10. chain series of organisms each dependent on the next as a source of food
  5. 12. A substance that provides nourishment for growth and Maintenace of life
  6. 13. Defines by their saturated hydric and anaerobic soils and water tolerant vegetation
  7. 14. Eats only plants
  8. 16. Less acidic. nutrient-rich supports diverse plant life
  9. 17. Different group of organisms fighting for the same meal
  10. 18. Organisms that break down dead organisms
  11. 20. Only eat animals
Down
  1. 2. Rain, Snow, Sleet, or Hail that falls to the ground
  2. 3. Global sum of all ecosystems
  3. 4. Covered in sand and rocks with drastic temperatures
  4. 6. Only eats plants and animals
  5. 7. Acidic with carnivorous plants
  6. 8. A single individual
  7. 11. Eat dead organisms
  8. 15. A specific region
  9. 19. Woody plants, slow moving water and lack of oxygen in the soil