ch.3 pollution.htm

Ch.3 Pollution

Section 1 What is pollution

1.1 Introduction of pollution and pollutant

Pollution refers to any addition to air, water, soil, or food by humans so that it becomes less favourable for humans and other organisms.Such kinds of additions that cause undesirable changes to the environment are called pollutant.


Ch.3 Pollution Section 1 What is pollution 1.1 Introduction of pollution and pollutant Pollution refers to any addition to air, water, soil, or food by humans so that it becomes less favourable for humans and other organisms.Such kinds of additions that cause undesirable changes to the environment are called pollutant.