Across
- 3. The top part of a building or house.
- 5. What we stand or sit on when we're outside.
- 7. To make something hotter.
- 8. Gray air comes from factories or cars.
- 9. What is the full word for "eco-"?
- 11. A strong, shiny material that people use to make things like cars, bikes, or spoons.
- 12. A small, hard piece of rock that you can find on the ground.
Down
- 1. A different word for "trash" and "garbage".
- 2. Doing something in a way that saves time, energy, or effort.
- 4. The stuff used to make things. For example, wood, metal, plastic,...
- 6. Taking something old, like a plastic bottle or paper, and turning it into something new so it can be used again.
- 10. Something close to where you live.