Across
- 4. These resources are obtained from the biosphere
- 6. The water current can be used to turn turbines for .... generation
- 8. ....... waves can be used to generate wave power,a renewable energy
- 9. The most common resource included in non-renewable category
Down
- 1. The depletion of natural resources is considered a .... development issue
- 2. Resources that come from non-living(non-organic)material
- 3. ........ can be used to generate electricity
- 5. ............ resources can be replenished naturally
- 7. Coal and petroleum are..........fuels
- 10. ........resources are resources that exist without actions of humankind