Pollution is the introduction of harmful substances into the environment. These harmful substances are called pollutants. There are some natural pollutants. An erupting volcano, for instance, releases gases and ash into the environment. However, most pollution on our planet is caused by people. Many of the activities that people engage in release pollutants into our environment.
Types of Pollution
There are three major types of pollution; air pollution, water pollution and land pollution.
Air pollution: This is the introduction of harmful substances into the atmosphere. These substances include harmful chemicals, tiny particles and biological materials.
Water pollution: This refers to the introduction of harmful substances into our oceans, lakes, rivers and groundwater. These substances include chemicals, untreated sewage and plastic.
Land pollution: This is the degradation of the Earth’s land surfaces by the deposition of solid or liquid waste. This waste can contaminate the land or groundwater.
Watch the video below which outlines the various types of pollution.