According to the scientific community of Alfred Wegener's day, what was his flaw in his theory of the continental drift?

What policy did "jim crow" laws put in place? black codes integration segregation 2. the supreme court case that established the doctrine of "separate but equal" was dred scott v. sandford plessy v. ferguson brown v. board of education 3. the supreme court case that overturned the doctrine of "separate but equal" wasdred scott v. sandford plessy v. ferguson brown v. board of education

How do comedies differ from tragedies

How does sociology account for the cause of drug and alcohol addiction?