The enhanced greenhouses effect is a) a natural process b) a human process c) a natural process that is added by humans d) none of the above

The layers of earth are based on what two sets of characteristics?

How did mercantilist policies european countries build wealth and power

Land cool more quickly than water. as a result the pressure over the water is lower than that over the land, and the air moves from the land to the water. what is this known as. a) prevailing winds b) sea breexes c) land breezes d) valley breezes