U-shaped mountain valleys that may contain rocks that have been polished or appear to havenear parallel scratches on the surface are most likely formed by:

Chris lives in a city that experiences heavy rainfall with average annual precipitation of 882 millimeters. it is warm all year.mark lives in city with an average annual rainfall of 40 millimeters. it has hot summers and cool winters.chris's city is in a climate, while mark's city is in a climate.

Most people can afford to spend approximately 2 ½ times their gross annual income for the purchase price of a home

In africa what do they call a crop grown for direct sale and not for use?