What does a normal karyote for a male human

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

What problem would a person most likely have if her kidney did not work correctly?

What is it called when lava when it erupts from the surface through volcanoes.