1. Write the three stages of the Digestive System and explain one of them.
2. Write the differences between small and large intestine.
3. Explain the breathing process.
4. Write the definition of:
Bronchi - bronchioles - alveoli
5. Write everything you know about the heart.
6. Write the three types of blood cells and explain one of them.
7. Explain the differences between arteries, veins and capillaries.
8. Explain how our body removes liquid wastes.
9. What's the difference between vaccines and antiobiotics?
10. Complete about circulation blood flow:
