User: Please list the harm that air pollution caused based on the given passage.
Assistant: 1.	Air pollution is caused by the presence of harmful substances in the air, it can cause damage to human health, living beings and climate.
2.	Air pollution can cause diseases, allergies and even death to human, it can also harm animals, food corp and the nature.
3.	Air pollution can harm the natural environment by climate change, ozone depletion, habitat degradation ,acid rain.