sudden blasts of cold air that extend south from Canada and sweep across the plains
violent, spiraling winds that move in a narrow path over land.
system by which goods and services are produced and distributed to meet people's needs
tools and skills people use to meet their basic needs
the weather in some location averaged over some long period of time
the falling to earth of any form of water (rain or snow or hail or sleet or mist)
a storm with widespread snowfall accompanied by strong winds
a long period of dry weather
condition in which the earth's surface is worn away by the action of water and wind
An area distinguished by a unique combination of trends or features.
small river or stream that flows in to a larger river or stream; a branch of the river
fierce tropical storms with strong winds