Question

Sources of pollution​

Answer 1

The main sources of pollution are household activities, factories, agriculture and transport. Once they have been released into the environment, the concentration of some pollutants is reduced by dispersion, dilution, deposition or degradation

Answer 2

Answer:

This is the correct answer

Explanation:

Types of Sources

There are four main types of air pollution sources:

mobile sources – such as cars, buses, planes, trucks, and trains

stationary sources – such as power plants, oil refineries, industrial facilities, and factories

area sources – such as agricultural areas, cities, and wood burning fireplaces

natural sources – such as wind-blown dust, wildfires, and volcanoes