Introduction

Study Session 7 introduced you to some of the main sources and types of pollution. In this study session you will learn about the effects of pollution on the environment and on human health. You will find out how some pollutants can lead to unexpected problems because of the way they behave and their persistence in the environment. You will also learn about the different ways that people are exposed to pollution. Finally we consider some important principles that underpin the prevention and control of pollution.