Air Pollution

FIND OUT THE ANSWERS OF FOLLOWING QUESTIONS IN THIS VIDEO: 1. How are the human beings polluting the air? 2. Name the gases which are released due to Industries. 3. How does Acid Rain occur? 4. Which gases are released due to vehicle running on roads? 5. What do you understand by the term Smog? 6. What are CFC’s? What are their sources of production? How harmful are these to the environment?