Air Pollution and Protection

Peatüki alateemad:

  1. Air Pollution and Protection
  2. Polluted air spreads everywhere
  3. Burning fuels pollutes the air
  4. Bonus: What is smog?
  5. The atmosphere is like a greenhouse
  6. Some pollutants cause acid rain
  7. We have to protect the air
  8. I now know that…