Use Figure 12-2 to determine the age of a rock sample that contains a parent isotope with a half-life of 100 million years and contains 1/32 of the parent isotope.

a) 200 million years old

b) 100 million years old

c) 500 million years old

d) 300 million years old

Those who hope that land reform will end the problem of mass poverty and social inequality throughout middle and south america often cite as one of the causes of the problem. a. asian immigrants b. the indigenous population c. european systems of landholding d. the power of the roman catholic church