Across
- 2. the planet we live on
- 4. nature and the world around us
- 6. a thing or person that can help to do something
- 9. poor
- 10. help
- 14. the reason for doing something
- 15. a new thing created by someone
- 17. an international organization to help children
- 19. the changing of the earth's temperature
- 20. a person that made something new
Down
- 1. small machine like phones or computers
- 3. very few animals that might become extinct
- 5. studying on the internet instead of the classroom
- 7. dirty air, water, or land caused by people
- 8. group of countries to keep peace
- 11. to keep safe
- 12. machines and tools that help people do things
- 13. being male or female
- 15. to make better
- 16. things people can learn and do well
- 18. the same for everyone