Environment Crossword Of Squeak

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Across
  1. 1. crucial part of red blood cells that regulates oxygen
  2. 3. pennies were made out of this
  3. 4. found in salt
  4. 5. obtained by heating limestone and which combines with water with the production of heat.
  5. 6. uses a sorbent to reduce oxide emmissions
  6. 8. storage of unused chemical energy
  7. 10. a chemical used to control molds or fungi
  8. 11. an invertebrate animal of the large phylum Arthropoda, such as an insect or crustacean.
  9. 13. has a PH value less than 7
  10. 14. a substance that is toxic to plants, used to destroy unwanted vegetation
  11. 16. forms bones and teeth
Down
  1. 1. major part of thyroid hormones, which regulate metabolism
  2. 2. found in bananas
  3. 3. helps regulate water balance
  4. 7. a mixture of plant compounds used as a chemical indicator
  5. 9. a fragrant natural oil used as an insect repellent and in perfume and soap manufacture
  6. 12. has a PH value of more than 7
  7. 15. short for dichlorodiphenyltrichloroethane