Back to Nature

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Across
  1. 2. an unexpected event, such as flood or a fire, that kills a lot of people or causes a lot of damage
  2. 5. the weather conditions prevailing in an area in general or over a long period.
  3. 7. the fact of a country or city, etc. having too many people for the amount of food, materials, and space available there
  4. 8. To treat things that have already been used so that they can be used again.
  5. 9. A source of power, such as fuel, used for driving machines, providing heat, etc.
Down
  1. 1. the process of making air, water, soil, etc. dirty; the state of being dirty.
  2. 3. the natural world in which people, animals and plants live
  3. 4. the mixture of gases that surrounds the earth.
  4. 6. A building or group of buildings where goods are manufactured or assembled chiefly by machine.