Answer:
Scientists used the mitochondrial DNA of Prince Philip in order to investigate the relationship of Tsarina with the Russian royal family.
Mitochondrial DNA inherited only through the maternal line i.e., it is passed from the mother to her offspring.
It helped in identifying the relationship of Tsarina with prince Philip who was related to Tsarina through his mother. It proved that Tsarina and her four daughters were indeed buried into two graves.
Answer:
it has been beneficial because the climate with the environment helps humans to cope with the level of civilization
The only one that makes sense is size. because there could be other minerals the same size. so size wouldn't be a property to help identify