what processes have broken apart and carried off the many layers of solid rock that covered the wave for millions of years

Witch one is it soo it the the question b.a,b,c,d

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

Suggest 3 different reasons why there is an ageing population in the uk .