Describe one type of strain that results when rock responds to stress

Which of the following is not an effect of land substance

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

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4