Natural Resources

4. a strong, hard magnetic silvery-gray metal, the chemical element of atomic number 26, much used as a material for construction and manufacturing, especially in the form of steel.
6. combustion or burning, in which substances combine chemically with oxygen from the air and typically give out bright light, heat, and smoke.
8. a solid inorganic substance of natural occurrence.
11. light from the sun.
14. a living organism that feeds on organic matter, typically having specialized sense organs and nervous system
15. a living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses,
16. The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants
18. Natural gas, is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium
20. moisture condensed from the atmosphere that falls visibly in separate drops
21. the part of the earth's surface that is not covered by water, as opposed to the sea or the air

1. a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
2. classified as a nonrenewable energy source because it takes millions of years to form
3. The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants
5. a viscous liquid derived from petroleum, especially for use as a fuel or lubricant.
7. a solid material that is typically hard, shiny, malleable, fusible, and ductile
9. a loose granular substance, typically pale yellowish brown, resulting from the erosion of siliceous and other rocks and forming a major constituent of beaches, riverbeds, the seabed, and deserts.
10. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms
12. the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.
13. a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain
17. a loud rumbling or crashing noise heard after a lightning flash due to the expansion of rapidly heated air
19. the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen