Across
- 2. - A natural resource is a resource that comes from.
- 3. - The act of saving, protecting, or using resources wisely
- 5. - burning wood produces.
- 6. - ______ electricity is produced by water.
- 8. - Atmosphere consists of several_____
Down
- 1. - make new items out of old things.
- 2. - Loud music causes _____ pollution.
- 4. - main number of layers in atmosphere.
- 7. - Plants exhales.
- 9. - Solar panels collect energy from.