Energy Resources

3. protecting species from extinction, maintaining and restoring habitats, enhancing ecosystem services and protecting biological diversity.
5. the process of creating electricity using the wind, or air flows that occur naturally in the earth's atmosphere.
8. power derived from the energy of falling or fast-running water
9. a combustible black or dark brown rock consisting mainly of carbonized plant matter, found mainly in underground deposits and widely used as fuel.
10. a viscous liquid derived from petroleum, especially for use as a fuel or lubricant.
11. energy produced from sources that do not deplete or can be replenished within a human's life time.
12. heat derived within the sub-surface of the earth.
14. radiant energy emitted by the sun.
15. flammable gas, consisting largely of methane and other hydrocarbons, occurring naturally underground (often in association with petroleum) and used as fuel.

1. a zero-emission fuel burned with oxygen.
2. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
4. sources that will run out or will not be replenished in our lifetimes.
6. the use of nuclear reactions that release nuclear energy to generate heat
7. the act of maintaining (something) in its original or existing state.
13. plant or animal material used for energy production, or in various industrial processes as raw material for a range of products.