Across
- 4. no longer existing or alive.
- 5. all of the people born and living at about the same time.
- 8. a hard black mineral used as fuel for burning.
- 12. a warm-blooded animal with fur or hair that feeds milk to its young.
- 13. not able to be changed back to its original state.
- 15. able to be broken down naturally by living organisms.
- 17. a substance that provides nourishment and helps maintain life.
- 18. harm or injury caused to something or someone.
- 20. to give food to someone or something.
Down
- 1. a substance that is burned to produce energy, such as gasoline or coal.
- 2. a gas that is essential for breathing and sustaining life.
- 3. the natural world around us, including plants, animals, and humans.
- 6. the natural home or environment of an animal, plant, or other organism.
- 7. to eat, drink, or use up something.
- 9. the reason why something happens.
- 10. having a lot of moisture in the air.
- 11. to have an influence on something or someone.
- 14. to officially forbid something from being done, seen, or used.
- 16. something that is good for you or gives you an advantage.
- 19. a chemical substance with a sour taste that can dissolve metals and burn skin.