Across
- 1. at risk of becoming extinct
- 5. to make impure or unclean
- 6. a long search for something
- 7. to make clean or disinfect
- 10. one of the [food] components in a dish
- 12. something harmful in the environment
- 14. very large
- 18. has six legs and usually wings
- 19. an injury, usually to the skin
- 21. a sugary fluid in plants
- 22. an animal that eats plants
Down
- 2. a person who travels in a spacecraft
- 3. a specific smell
- 4. something added to soil to make it grow better
- 8. a plant that has seaweeds and is usually in water
- 9. marks on the surface of a person's fingertips
- 11. unable to be reached or understood
- 13. able to handle difficult conditions
- 15. a mark left on the skin from an injury
- 16. the process of finding something, especially for the first time
- 17. the natural home of an animal or organism
- 20. a time of trouble or danger