Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Identify three ways in which the government can reduce the problem of air pollution.

### Response:
The government can reduce air pollution by encouraging carpooling and public transportation by providing incentives and implementing laws to reduce emissions from vehicles; regulating industrial pollutants by setting emissions standards for companies and enforcing those standards; and increasing the green spaces around cities through tree planting and land conservation, which can help to reduce ground level ozone and smog.