Under present US laws, by 2016 car manufacturers must ensure that vehicles made in America average 39 miles per gallon. This step was taken in order to . A. increase air pollution B. decrease fuel efficiency C. reduce energy consumption D. reduce water pollution Please select the best answer from the choices provided A B C D

C. Reduce energy consumption.

Efficiency enhancements are anticipated to lessen future fuel use. By 2015, the required efficiency benchmarks found the middle value of around 35 miles for every gallon (mpg) for traveler autos and around 27 mpg for light trucks subsequent to considering the impression blend of vehicles sold inside every classification. The principles for every class are right now required to increment after some time with the goal that the benchmarks for model year 2025 vehicles are relied upon to reach around 53 mpg and 38 mpg, separately.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

The name may be in importnce  to them