Name the parts of the atoms. Include the charge, mass, and location of each.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

Moving down the ramp from 6 meters to

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?