Which part of heat transfer makes milk boil

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.

Why is it necessary to obey social norms? write briefly.

According to the law of supply,suppliers want to sell their product at prices