This chapter covers questions on the human reproductive system. Questions on the reproductive organs and human development are included. Disease This chapter covers the body's natural defenses, acquired immunity, and ways to prevent and treat diseases. Diseases caused by micro- organisms are emphasized. This chapter covers questions on ecology.
Ecology is the study of the interactions between organisms and their environment.
This chapter covers the biotic and abiotic factors in the biosphere, and the roles of both producers and consumers in the ecosystems. Questions on symbiotic relationships and the causes of pollution in water, in air, and on land are included.