air pollution

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Across
  1. 2. Buy ......... cars instead of traditional cars powered by fuels.
  2. 4. Take....... transport instead of driving.
  3. 5. Factories that emit harmful gases as by-products should be fitted with filters to remove ....... before releasing the gases.
  4. 6. We can use ....... instead of plastics for packaging.
Down
  1. 1. Grow more ........ which absorbs carbon dioxide and releases oxygen.
  2. 2. We need to reduce air pollution to protect the ....... .
  3. 3. We can ....... waste materials instead of disposing them.