Across
- 2. someone who disagrees with an idea
- 6. the natural environment of an animal or plant
- 10. to build something by putting parts together
- 11. relating to the air, water, and land
- 12. at risk of no longer existing
- 14. something you have an can use
- 16. small in amount or number
- 17. keep safe from danger
Down
- 1. advantage
- 3. to give something
- 4. the possibility of something bad happening
- 5. a very dangerous or difficult situation
- 7. different from what is usual or traditional
- 8. a type of machine which uses air or water to produce power
- 9. to make something dirty or harmful
- 13. a terrible accident which causes a lot of damage
- 15. a way of doing things