Across
- 3. Heat energy that comes from the inside of an object.
- 5. to protect from harm or destruction.
- 6. ________ fuel is a natural fuel formed from the remains of organisms.
- 8. a resource that is alive.
- 9. resource that can be replaced by nature.
Down
- 1. _____________ resource is something in nature that can be used by people.
- 2. electricity produced by machines that run by moving water.
- 4. a resource that is not alive.
- 7. energy from the Sun.
- 10. a form of energy that captures the force of moving air.