Across
- 5. What allows us to work?
- 8. Is hard coal which is a highly desirable fuel bemused of its high heat content and low sulfur content and because it burns cleaner, unfortunately, it is a limited resource
- 10. Second most used energy source in Ecuador
- 11. Energy in a transformed stage
- 13. Who is the fifth largest producer of crude oil in South America?
- 14. Who consumes large amounts of energy because many industries are established
- 15. Remains of natural organisms that with time and pressure have become oil
Down
- 1. Energy derived from sources that will run out during the human lifetime, it will not be replenished.
- 2. What are fossil fuels mostly composed of?
- 3. Which is extensively used as fuel because of its high heat and large supplies (contains high sulfur)
- 4. Brown coal with low heat content, low sulfur content with a limited supply
- 6. Energy forms that can be used directly from nature, do not have any previous conversion
- 7. First stage of coal with low heat where partially decayed plants in swamps and bogs
- 9. Energy that can be easily replenished, and won’t end during the human life span
- 12. What do we call a combustible mineral made of carbon formed from organic matter after millions of years of compression?