Social studies J.S.S 2 second term

Sub-theme: Fundamental of Social Studies family as the Basic Unit of Society

Week 7

Harmful substances I

Performance objectives:

Students should be able to:

1. Define harmful substances

2. List and explain the examples of harmful substances.

Content

Meaning of harmful substances

Harmful substances are elements that are dangerous to human health, which can cause death, injury or disease in human, animals and plants.

It also means bacteria, viruses, microorganisms or a toxic substance produced by an organism.

Examples of harmful substances

1. Rotten food: Spoilt food is very harmful to the body and can cause illness.

2. Unripe fruits: these are a.... View More