Oxygen

Air keeps the human body cool, contains a variety of gases such as oxygen, carbon dioxide, hydrogen, carbon monoxide, etc.

 

 Oxygen is very important for our life. People cannot live without oxygen. Oxygen plays an essential role in human survival.

 

 If carbon-di-oxide or carbon monoxide gas enters the human body in any way instead of oxygen, the person will die. But this carbon-di-oxide gas people throw into the house. Which is very harmful to humans and animals.