Food

This chapter explains that food is essential for all things living. It explains how food energises and helps us fight against ailments. Food is sourced from plants and animals and can be eaten raw or cooked. People eat various types of food.

This chapter explains that food contains nutrients, such as fats and vitamins, which are necessary for a healthy and growing body. A diet must include a balanced mixture of all nutrients to keep the body disease-free.

This chapter explains how waste substances are sifted from useful ones. According to the nature of substances, there is more than one way of separating them. The addition of one substance to another to form a homogenous mixture is called a solution.