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Which of these is needed for natural selection to happen?
Animals change their bodies on purpose to fit in with their surroundings.
Michael Majerus released 4,864 peppered moths over his six-year experiment. On average, how many moths is that per year, to the nearest whole number?
After an El Niño period left mostly small, soft seeds on Daphne Major, what happened to the medium ground finches' average bill size, and why?
In the peppered moth, the dark form has been declining in Britain since 1970, and field experiments show birds eat dark moths more often on today's less sooty bark.
Mice living on a uniform brown forest floor are less likely to be eaten if their coat matches the ground; lighter and darker mice are caught more often. Which type of selection is this?
Explain why the spread of antibiotic-resistant bacteria is an example of natural selection, and why it is wrong to say the antibiotic 'makes' bacteria resistant.
In evolutionary biology, which individual has the highest fitness?
The Grants found that natural selection on Darwin's finches was frequent yet the finches' states after 30 years could not have been predicted. Reconcile these two findings.