Energy

5. A diesel substitute produced by extracting and chemically altering oil from plants
9. the amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.
10. energy that comes from the sun
12. fuel from organic sources
13. the energy an object has due to its motion
14. A machine that converts mechanical energy into electrical energy
15. The ability to do work or cause change
19. A resource that can be replaced when needed.
21. flammable gas, consisting largely of methane and other hydrocarbons, occurring naturally underground (often in association with petroleum) and used as fuel.
22. warming that results when solar radiation is trapped by the atmosphere

1. of or related to hot water
2. oil burning, replaced steam engine, used in transportation
3. an internal-combustion engine that burns heavy oil
4. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
6. A form of energy that travels through space as waves
7. to change from one form to another
8. Heat energy
11. stored energy that results from the position or shape of an object
16. Movement of energy from one place or object to another
17. liquid fossil fuel; oil
18. a unit of power equal to 1000 watts
20. electric or motive power generated by a nuclear reactor.