Keeping Our Bodies Healthy

Understanding science helps us make good choices about our health. The human body is made up of systems that work together to keep us alive and well.

Major Body Systems

• Circulatory System: Moves blood and nutrients.
• Respiratory System: Brings in oxygen and removes carbon dioxide.
• Digestive System: Breaks down food for energy.

Making Healthy Choices

Eating balanced meals, exercising, and getting enough sleep are all important. Science helps us understand how diseases spread and how to prevent them.

Everyday Applications

Knowing how the body works helps us take care of ourselves and others.