PHYSICAL EDUCATION

Is it better to breathe through your nose or mouth? Explain. List 7 ways to keep your respiratory system healthy. 5. 2. 6. 3. 7. 4. Immune System. What is the function of the immune system? What organs are involved in immune system? What does the spleen do? List four ways to keep your immune system healthy. 1. 3. 2. 4. Endocrine System ................
................