How do hydrothermal vent archaea get energy?

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?

Does mitochondria still meet the definition of a eukaryote why or why not?

What is the difference between an igneous, sedimentary and metamorphic rock