jnmnAir around us

123456789
Across
  1. 3. plants use this gas for making their food
  2. 5. layer of air surrounding the earth
  3. 8. we cannot see air as it is
  4. 9. animal breathing under water
Down
  1. 1. mixing of harmful gases in the air
  2. 2. moving air
  3. 4. can fly in the air
  4. 6. gas needed for breathing
  5. 7. air is a mixture of these