According to the big bang theory, how long ago did the universe begin?

Overall cooling of earth's climate causes

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

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?