Air is the ocean we breathe. Air supplies us with oxygen which is essential for our bodies to live. Air is 99.9% nitrogen, oxygen, water vapor and inert gases. Human activities can release substances into the air, some of which can cause problems for humans, plants, and animals.
There are several main types of pollution and well-known effects of pollution which are commonly discussed. These include smog, acid rain, the greenhouse effect, and "holes" in the ozone layer. Each of these problems has serious implications for our health and well-being as well as for the whole environment.
Air pollution is where you have things like aerosols such as fumes from hair sprays, smoke from chemical plants, and even exhaust from cars that pollute the air making it difficult for a lot of people and animals to breathe. And yes, the more we pollute the air, the bigger the holes in the ozone layer get and let in way too much ultraviolet radiation that could one day possibly cook the planet like microwaves do.