The what were once very high mountains but have been eroded over time A. great basin
B. appalachian highlands
C. rocky mountains
A, B, or C Please and thank you

Why don't all places on earth receive the same amount of direct sunlight at the same place?

Reading graphs: unemployment us unemployment rate (1961-2011) identify the trends in the graph and then use the drop- down menu to complete each statement from 1961 to 1965 unemployment was in the mid-2000s through 2011. unemployment was percentage unemployed 1961 1971 1981 1991 2001 2011 year

Which year held a congressional election and a presidential election