Across
- 2. we have 18% in our body
- 3. it has all the primary ones
- 5. it is in eggs
- 6. of what is made all living things
- 8. what we get from oxygen
- 9. we have 65% in our body
Down
- 1. we have 1% in our body
- 2. it is in our bones
- 4. is in protein
- 7. the most found chemical