Our Environment

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Across
  1. 2. lungs of the earth
  2. 4. a mixture of biodegradable waste that can be added to soil to increase its fertility
  3. 5. a site for the disposal of waste materials
  4. 6. everything that surrounds us
Down
  1. 1. the third 'R', apart from reduce and reuse
  2. 2. a disease caused by drinking polluted water
  3. 3. harmful substance added to the environment