Explain the differences between pure air and polluted air.
Pawan Prajapati , 4 Years ago
Grade 12
1 Answers
Harshit Singh
Last Activity: 4 Years ago
Dear Student
Pure air is free from germs and harmful gases. It contains 78% nitrogen, 21% oxygen and small amount of other gases and dust particles. Polluted air contains harmful gases and unwanted substances.
Thanks
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.