Pollution

Page 1

What is Pollution?

Refers to the introduction of substances into the environment, such that it results in unpleasant or damaging effects on people, animals, plants, and buildings.

One type can lead to other types of pollution.

What are pollutants?

Harmful substances that damage the environment.

What is waste?

Refers to materials that are useless and no longer wanted

Leads to pollution if

disposed improperly

excessive amount

Generated from

Households (leftover food, used water)

Industries (dust, smoke, toxic gases)

Agricultural activities (excessive chemical fertilisers)

Page 2

Land Pollution

Occurs when waste is not disposed of properly on land or when chemicals are used excessively on farms.

May be classified into

Hazardous waste

contain high levels of toxic compounds

catch fire easily

release toxic gases

corrode other materials

examples: cleaning agents such as bleach, solvents, paints, pesticides, motor oil, battery acids

Non-hazardous waste