The average emission rates in the United States from burning coal are 13 lb/MWh (pounds per megawatt hour) of SO2 and 6 lb/MWh of NOx. (A pound is a unit of mass, and a megawatt hour is a unit of energy.) Imagine that a scientist developed a new emission control device that can cut each of these emissions to 35% of the current output. If the device were installed, what would the average emission rates change to?

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

bacterium is not correct

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.