1) The reasons of pollution can vary depending on the type of pollution, but some common reasons include industrial activities, vehicular emissions, deforestation, agricultural practices, and improper waste disposal.

2) Some pollutants that can be mentioned include carbon monoxide, sulfur dioxide, nitrogen oxides, particulate matter, volatile organic compounds, and heavy metals. Many of these pollutants are harmful to human health and the environment, causing a variety of health issues and contributing to climate change.