This handout further explores the immune system, with an emphasis on how the body fights off infections and the importance of maintaining a healthy immune system. It includes information on the role of the spleen, bone marrow, and other immune system organs. The document encourages students to understand how their body protects itself from harmful microorganisms and the impact of healthy habits on immunity.

biology science answer key immune system health education handout SNC2D grades 6-8 snc1d