What landform generally precedes a u-shaped valley? a. a horn b. an esker c. a mountain d. a v-shaped valley

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

Can someone me with this plz? ! i'm putting 20 points on it!

What did the native title act do? a. it recognized and protected aboriginal rights to land. b. it stated that aborigines were to be counted as part of the census. c. it established aboriginal languages as official. d. it granted aborigines suffrage.