On this map, the line of 49 degrees north latitude follows a

Why are people more likely to marry individuals with social and cultural backgrounds very similar to their own? a. parents and other family members always exert pressure to marry within the group. b. people spend a great deal of time alone, and therefore can have few opportunities for meeting people. c. people develop irrational fears of out-group members and are scared to date them. d. people have greater access to individuals like themselves.

Ball is tossed up in the air at its peak, it stops before beginning to fall.the ball at its peak has

Which statement about spreading knowledge of diseases and health around the world is correct?