Across
- 8. related to cities or towns
- 10. a different choice or option
- 11. to put into action or make something work
- 15. to make sure something happens or is true
- 20. movement of vehicles on roads
- 22. tools or machines created by science
- 23. a feeling of physical or emotional ease
- 24. showing signs of success or progress
- 26. something that makes life easier
- 29. the maximum amount something can hold or do
- 30. too many vehicles causing slow movement
- 31. the state of being free from others' observation
Down
- 1. not wanting to do something
- 2. a part of 100
- 3. to fill a battery with power
- 4. not shared with others; personal
- 5. no harmful gases released into the air
- 6. energy from sources that naturally refill, like sun or wind
- 7. fuel used by cars and machines
- 9. connection between things
- 12. harmful materials in the air, water, or land
- 13. to give support or confidence
- 14. the natural world around us
- 15. already present or in use
- 16. doing something well without wasting time or energy
- 17. people who travel to work or school regularly
- 18. power used to make machines and lights work
- 19. thick air pollution from smoke and fog
- 21. the state of being simple or comfortable
- 25. something used for transporting people or goods
- 27. situations where traffic stops or moves very slowly
- 28. a device that stores electrical energy