Individuals have some responsibility for their own health. Understandings include how communicable diseases, such as colds, are transmitted and some of the body's defense mechanisms that prevent or overcome illness. Nutrition is essential to health. Students should understand how the body uses food and how various foods contribute to health. Recommendations for good nutrition include eating a variety of foods, eating less sugar, and eating less fat.
Different substances can damage the body and how it functions.
Students should understand that some substances, such as prescription drugs, can be beneficial, but that any substance can be harmful if used inappropriately. Human populations include groups of individuals living in a particular location. The size of a human population can increase or decrease. Populations will increase unless other factors such as disease or famine decrease the population. Types of resources Resources are things that we get from the living and nonliving environment to meet the needs and wants of a population.