ENVIRONMENT CROSSWORD

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Across
  1. 2. The type of fuel humans depend on most. It is non renewable and found underground.
  2. 5. energy The most abundant energy source capable of being harnessed by humans.
  3. 6. layer The part of Earths atmosphere that repels the suns ultraviolet rays.
  4. 7. The most common green house gas.Humans breathe it out and trees consume it.
  5. 8. Energy that can be used and reused an infinite number of times.
  6. 9. The name given to gases that trap heat and cause global warming.
  7. 10. Living within the limits of Earths natural resources
Down
  1. 1. The most efficient form of transportation in terms of energy usage. It does not pollute.
  2. 3. The term given to food sold in supermarkets and grown or fed without synthetic fertilizers, chemicals, hormones and antibiotics.
  3. 4. A tool used to illustrate how much a human being has on Earth.