Across
- 5. to destroy
- 6. nuclear energy
- 7. it's our duty
- 9. we're obligated to
- 13. electrical appliance
- 14. to throw out
- 16. going to use
- 17. collect
- 18. to develop
- 19. to discover
Down
- 1. going to be (place)
- 2. it's necessary
- 3. is going to be(adjective)
- 4. will speak
- 6. it's our responsibility
- 8. it's up to us
- 10. will improve
- 11. there is going to be (noun)
- 12. electric car
- 15. they should