Science Monthly Review

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Across
  1. 2. (v.) to use something again
  2. 5. (n.): when land quickly becomes covered with deep water
  3. 6. (n.) what different things are made up with
  4. 7. (n.) something that can harm air, land, soil or water
  5. 8. (v.) to use old materials to make new things
  6. 12. (n.): something that happens quickly and can harm or destroy large areas
  7. 13. (n.): when there is no rain or water in a place for a long time
  8. 14. (n.): the number of one kind of living thing in a habitat
  9. 15. (adj.) not a lot
Down
  1. 1. (v. ) to use less of something
  2. 2. (n.) something from Earth that living things use
  3. 3. (n.) when different people, plants or animals all try to get the same thing
  4. 4. (v.) to cause pollution
  5. 9. (n.): all of the different living things in a habitat
  6. 10. (adj.): when there are not a lot of one kind of plant or animal alive on Earth
  7. 11. (adj.) anything that is not built or put there by humans
  8. 16. (v.): when a large group of animals moves to a new area