NATURE GRID- Sustera foundation(www.sustera.org) invites you to participate in this crossworld puzzle competition conducted as part of the sustainable waste management awareness programme at Vettukad.All the best.

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Across
  1. 4. Layer of atmosphere where weather occurs
  2. 6. Weather over a long period
  3. 8. Grizzly polar bear
  4. 10. Frozen ground that stores lots of carbon
  5. 11. PET
Down
  1. 1. World cities day 2021:'Adapting cities for climate _____'
  2. 2. 'Lungs of the planet'
  3. 3. Montreal protocol is related to
  4. 5. Day-to-day condition of the atmosphere
  5. 7. Lumpy fossil fuel
  6. 9. A form of energy by capturing sunlight