Air Pollution

                          Smog hanging over cities is the most familiar and obvious form of air pollution.But there are different kinds of pollution some are visible, some are invisible that people introduce into the atmosphere that has damaged effects on living things and the environment is considered air pollution. Carbon dioxide, a greenhouse gas, is the main pollutant that is warming the Earth.
                          Other greenhouse gases includes methane which comes from such source as swamps and gas emitted by livestods and chlorofluorocarbons ( CFCs ), which were use in refrigerants and aerosol propellants until they were banned because of their deteriorated effect on the Earth's ozone layer. Another pollutant associated with climate change is Sulfur dioxide, a component of smog. Sulfur dioxide and closely related chemicals are known primarily as a cause of acid rain.
                          Industrial countries have worked to reduce levels of sulfur dioxide, smog, and smoke in order to improve people's health.On a larger scale,governments are taking measure to limit emissions of carbon dioxide and other greenhouse gases.

By: Doreen Trishia S. Tapic