Pollution - Crossword 01

12345678
Across
  1. 1. Pollution, Pollution caused by harmful substances in soil.
  2. 4. A substance that causes pollution.
  3. 5. Dioxide, A gas released by burning fuels.
  4. 6. Rain, Rain containing harmful acids.
  5. 8. Pollution, Pollution caused by dirty or harmful substances in water.
Down
  1. 2. Gas that protects Earth from UV rays.
  2. 3. Harmful contamination of the environment.
  3. 6. Pollution, Pollution caused by smoke and harmful gases.
  4. 7. Monoxide, A poisonous gas released by vehicles.