Which property supports the hypothesis that eukaryotic mitochondria were once prokaryoticorganisms?

i'd say that the moon rock is about 2.2 billion years old.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.