Which of the following imports has increased over the past 6 years? a. coal b. oil c. lumber d. all of the above

Ans.

Coal is used as a major fossil fuel for the production of electricity as it is the least expensive fossil fuel. Other uses of coal include are use in cement industry, steel production, and as a source of liquid fuel. That is why, 'import of coal has increased over past six years as compared to other energy sources.'  

Thus, the correct answer is option a). coal.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

earthquakes in florida are rare because the state is not located near any tectonic plates. in fact, florida is tied for first place as having the fewest earthquakes of any state. much of florida is limestone and seafloor materials that is not conducive to earthquakes.

explanation: