Across
- 3. - a population running low
- 6. - most cars need this changed once in a while
- 7. - nondomestic enviornment
- 9. - most wanted mineral
- 11. - environment friendly fuel
- 13. - vital for building strong bones
- 15. - building blocks for rocks
Down
- 1. - farm
- 2. - shallow waters
- 4. - people can mine
- 5. - a woodland habitat for most animals
- 8. - metal
- 10. - UV
- 12. - marine wildlife
- 14. - the base of where plants grow