Air is one of the four classical elements along with water, earth, and fire. Think of air like the wind that you feel outside, it's something you cannot see but can feel it when it touches your skin or moves your hair.
Air is all around us, and we breathe it in and out with every breath we take. The air is made up of different gases like oxygen, nitrogen, and carbon dioxide. It's like a soup with lots of different ingredients mixed together.
Sometimes the air around us can be polluted, meaning that it's dirty and can make us sick. That's why we have to take care of the air we breathe by not littering, using clean energy sources, and doing our part to keep the environment clean.
In ancient times, people believed that everything was made up of these four elements, and that they had different qualities. Air was seen as something that was light and free-moving. It was believed to be associated with the mind and communication, because we use our breath to talk and express ourselves.
Overall, air is a very important part of our lives, and we need to take care of it to ensure that we can all breathe easily and live healthy lives.