Some animals eat plants for food. Other animals eat animals that eat the plants. Plants reproduce and grow in various ways. Each plant or animal has different structures which serve different functions in growth, survival, and reproduction. For example, humans have distinct structures of the body for walking, holding, seeing, and talking.
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. The human body is supported and protected by various body systems. All animals depend on plants. Some animals eat plants for food. Other animals eat animals that eat the plants.