Green House Gasses And Effects

12345
Across
  1. 1. We should replace normal fuel with _______ fuel.
  2. 2. By using ______ energy to heat and light homes and offices.
  3. 5. We should buy _______ efficient household appliances.
Down
  1. 1. We should replace normal bulbs with ______ bulbs.
  2. 3. Which layer lies between 20 to 40 km of the atmosphere.
  3. 4. This gas is produced by rearing cattle.