Across
- 2. wild and uncontrolled crying or laughter
- 3. something you think about all the time
- 5. the study of the structure of plants and animals
- 7. something good for your health
- 8. to do too much in a short period of time
- 10. something that can kill you; deadly
Down
- 1. the process of breathing
- 4. to breathe out
- 6. something that spreads easily from person to person
- 9. when something is being tried