What did u. s. government do in the 1860s to encourage settlers to develop the great plains

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angle

Which features do all new rocks formed near an oceanic ridge share? check all that apply. pillow-shaped striped pattern provide evidence to seafloor spreading made from molten material iron oriented in same direction