Which of the following is NOT true regarding a scientific theory? O A scientific theory is supported by a great deal of data.
O A scientific theory is a guess or opinion.
O A scientific theory is always subject to correction.
O A scientific theory hasn't had an evidence proposed to disprove it.

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna