The layers of the atmosphere are characterized by changes in . The troposphere experiences large changes in . Airplanes fly best in . The temperature in the troposphere as you go higher, and in the stratosphere, it as you go higher.

The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?