Great Barrier Reef

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Across
  1. 2. The effect of climate change
  2. 3. the degree to which the air is suitable or clean enough for humans or the environment
  3. 6. A common greenhouse gas
  4. 7. The effect of trapped heat in the atmosphere
  5. 8. Catching too many fish at once, so the breeding population becomes too depleted to recover
  6. 9. A measure of the impact each of us has on the environment
Down
  1. 1. The whitening of coral
  2. 4. What type of reef is the Great Barrier Reef
  3. 5. The effect of littering
  4. 9. The result of Overfishing