| Questions | Answers |
|---|---|
| Breathing in oxygen with your lungs. | respiratory system |
| Peeing a lot because you drank too much water. | excretory system |
| Using your brain and studying for your Biology test. | nervous system |
| Using your brain and studying for your Biology test. | endocrine system |
| Carrying oxygen to all of the body cells via the blood. | circulatory system |
| Getting a fever to fight off an infection. | immune system |