Inference or observation? based on their shapes i believe africa and south america were once connected.

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Which organelle breaks down sugar molecules that supply energy to the cell ?

What was darwins theory of common decent