What is one advantage given by the stiffer bony skeleton of the bony fishes? A) they have superior echolocation capabilities

B) it allows them to remain upright in the water

D) they can swing very suddenly and very quickly

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

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.