A
B
AB
O
unless you're asking for specifics, like O+ and such, but I think you just wanted the main four, so there you go. hope this helps, but I may be wrong ^^
The Highest Taxonomic Rancho Of Organisms Is Domain A Domain
I think B. I hope this helps.
I think it might be lyosomes as they help break down waste and other stuff in a cell.
The fossil record shows a sequence from simple bacteria to more complicated organisms through time, it is very reliable because it is physical evidence and by studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.