According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the fossil record means that

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above

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