Across
- 3. is the black part in the centre of the eye
- 5. a famous muscle inside the mouth
- 7. filter substances and create urine
- 8. what is that organ that allows us to survive, which without oxygen dies after 7 minutes?
- 9. allow us to hear what others say
Down
- 1. is transported by blood vessels
- 2. Which organs enable us to receive oxygen
- 3. the liquid part of the blood
- 4. continuously gives an electric shock
- 5. how many fingers a human being has
- 6. what is produced in a woman's breast during pregnancy