Environment

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Across
  1. 5. in danger of being harmed, lost, unsuccessful, etc
  2. 6. pollution harmful substances in the air, often consisting of waste
  3. 7. the protection of plants and animals, natural areas
  4. 9. all the living things in an area and the way they affect each other and the environment
Down
  1. 1. animals and plants that grow independently of people, usually in natural conditions
  2. 2. change changes in the world's weather
  3. 3. footprint a measurement of the amount of carbon dioxide that their activities produce.
  4. 4. a very large city, especially one with more than 10 million people living in it
  5. 8. able to continue over a period of time