What conditions are need for an accurate radiometric date to be obtained form a mineral sample?

What happens in puerto rico in 2012 to celebrate the anniversary of clemente's 3000th hit

Which factors slowed population growth in china until the 1300? a. one child policy. b. urbanization c. epidemics. d. warfare

Which of the following was featured in the middle-class lifestyle of the gilded age? a new emphasis on acquiring goods a return to classical ideals renewed interest in controlling journalists a reflection of rural values