EARTH SCIENCE

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Across
  1. 6. ______ fuels are sources of non-renewable energy, formed from the remains of living organisms that were buried millions of years ago
  2. 7. to make unfit for or harmful to living things, especially by the addition of waste matter
  3. 8. prevention of wasteful use of a resource
  4. 10. a person who does not eat meat
  5. 13. a small arthropod animal that has six legs and generally one or two pairs of wings
  6. 14. CO2, also known known as _____ dioxide
  7. 15. Earth's ______ gases trap heat in the atmosphere and warm the planet
Down
  1. 1. a person who campaigns to bring about political or social change
  2. 2. Earth Day is every year on the 22nd of _____
  3. 3. decayed organic material used as a plant fertilizer
  4. 4. the long term patterns of temperature, humidity, wind, etc. in an area
  5. 5. a community of interacting organisms and their environment
  6. 9. grown or raised without chemicals
  7. 11. the air that surrounds us
  8. 12. convert (waste) into reusable material