Ecosystems

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. The immature free-living form of most invertebrates and amphibians and fish which at hatching (5)
  2. 8. An organism that makes its own food, usually using sunlight. (8)
  3. 9. To arrange or order by ___ or categories (8)
  4. 11. The natural world around us (11)
  5. 12. Waste matter that contaminates the water or air or soil (9)
  6. 13. To consider in detail and subject to an ___ in order to discover essential features or meaning (7)
  7. 14. An organism that obtains energy by eating other organisms. (8)
  8. 15. To make fit for, or change to suit a new purpose (5)

Down

  1. 2. The metabolic processes whereby certain organisms obtain energy from organic molecules (11)
  2. 3. Any of various water-soluble compounds having a sour taste and capable of turning litmus red (4)
  3. 4. The temporal end (10)
  4. 5. An animal organism in the early stages of growth and differentiation that in higher forms merge (6)
  5. 6. English painter and art critic (3)
  6. 7. Embryonic leaf in seed-bearing plants (9)
  7. 9. To exercise authoritative ___ or power over (10)
  8. 10. A number representing a quantity assumed to have a fixed value in a specified mathematical context (8)