Air pollution happens when the air around us becomes dirty and unhealthy for plants, animals, and people. We can’t see air pollution because it’s made up of tiny particles like smoke, dust, and chemicals. Air pollution can come from cars, factories, and even when we burn things like wood. When there is too much pollution, it can make it hard for us to breathe and can harm plants and animals too. We need to take care of our air by not polluting it and using cleaner ways to do things.