Want to know:

Which of the following is probably the best explanation for the fact that Antarctic penguins cannot fly, although there is evidence that millions of years ago their ancestors could do so?APenguins live on land and feed in the water; therefore they have no need to fly.BThe Antarctic home of penguins is flat and barren; therefore there is no place to fly.CAncestral penguins without large wings were better able to swim and feed in the water; therefore they passed their genes for shorter wing structure on to their offspring.DAncestral penguins did not use their wings for long periods of time; therefore today’s penguins have only tiny, nonfunctional wings.EThe cold and wind of Antarctica make flight impossible; therefore penguins that live there have lost the ability to fly.

Get a detailed, AI-powered explanation for this question and thousands more on StudyFetch.