Environment crossword

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Across
  1. 3. - an amount of gas or vapour that smells strongly or is dangerous to inhale.
  2. 5. - plants, animals, and other organisms that live in the salt water of seas or oceans
  3. 8. - toxic substance that causes injury or death when absorbed or ingested
  4. 12. - persistently dry hot weather that does not allow plants to meet their water needs
  5. 13. - an area or place for putting garbage
  6. 14. - a person who tries to prevent dangerous factors affecting the living environment
Down
  1. 1. - the dying out or extermination of a species
  2. 2. - are natural energy sources
  3. 4. - rapid growth of cities
  4. 6. - to suffer (for a long time) from some disease
  5. 7. - a period and situation where starvation and resulting diseases are the main causes of death
  6. 8. - action to stop something from happening
  7. 9. - a mixture of gases that are in the earth’s crust
  8. 10. - water spoiled from use in production
  9. 11. - to harm the environment by exhaust gases, waste water