Radii of planets
(Which planet has the larger radius, Uranus or Neptune)

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

Regarding most of the narrator’s story, which word best describes the tone?

What drives an advertising campaign?