Across
- 2. The total quantity of weight of organisms.
- 5. Resources that cannot be easily replaced, if at all.
- 7. Will always be there in our lifetime.
- 8. Resources that use wind and solar power at the same time.
- 9. Resource from within the earth that is free.
- 10. Free renewable resource.
Down
- 1. Walls that store water just in case it turns into a nonrenewable source.
- 3. Resources that cant run out (sun, Wind)
- 4. Uses the energy of flowing water to create electricity.
- 6. A breeze that flows through the air.