Food

This chapter explains agriculture and its processes, such as ploughing, soil strengthening, sowing, irrigation, protection, harvesting and storage. It also explores the steps to improve production, the green revolution and food from animal sources.

This chapter explains the types of microorganisms. It talks about the good and bad effects of microorganisms in our lives and ways to preserve food. It explains the role of microorganisms in the nitrogen cycle that helps all living matter survive.