Exactly how much dry sand, in pounds, would need to be added to a 55-gallon metal drum to make it sink? the empty drum weighs 40 lb.

Do you guys know all the answers to this

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

Based on the information in the graph, what can you conclude about humans in the world in general?