Biology

This chapter deals with the classification of microorganisms. We will learn about disease-causing microorganisms, their modes of transmission, and preventive measures. Discoveries of microorganisms are also discussed here.

In this chapter, we will understand the meaning of health. It classifies the diseases into infectious and noninfectious based on their modes of transmission. A brief on cancer, AIDS, diabetes, and heart diseases is given here.

This chapter discusses the sources of air and water pollution. It discusses their impacts on living beings and the environment, along with their preventive measures. It also describes the various methods of purification of water.

This chapter describes the structure of a cell and cell organelles, along with their functions. We will also learn the various parts of the nucleus of a cell. It also discusses the differences between an animal cell and a plant cell.

In this chapter, we will study the life processes of the human body. It classifies the respiration into internal and external respiration. It also details the process of the blood circulatory system, along with a brief on blood transfusion.

In this chapter, we will learn about the ecosystem. It explains how increasing population causes an increase in the use of resources. It also discusses the effects of urbanization and industrialization.