Environment

123456789
Across
  1. 3. This is called the kitchen of a plant
  2. 4. Strong stem of a big tree
  3. 6. This is needed for burning and breathing
  4. 7. This substance gives the green colour to leaves
  5. 8. The thin layer of air that surrounds the earth
Down
  1. 1. Sun, stars, glow worms are which sources of light?
  2. 2. Fastest growing woody plant
  3. 5. This gas protects us from harmful sun rays
  4. 7. this animal is also called the ship of desert
  5. 9. A portion of plant that grows above the ground