Environmental Issues

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Across
  1. 2. Increasing the temperature
  2. 4. The mark left by a foot or shoe on the ground
  3. 5. A violent shaking of the ground that causes great destruction
  4. 7. A large amount of water that causes destruction
Down
  1. 1. A building in which plants are grown that need protection
  2. 3. Unwanted matter or material of any type
  3. 4. Injecting liquid into the ground to extract oil or gas.
  4. 6. When something is not easy to find or get