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Based on their observations and the data they collected, the grants concluded that evolution by natural selection had occurred in the medium ground finch population. the increase in the average beak size of the offspring was a direct result of the change in the food supply during the drought. in order to have reached this conclusion, the grants must have either assumed or proven that several other facts about the finch population were true. which statements represent information that must be true in order for the grants conclusion to be correct? select the three statements that must be true.
a) an individual finch’s beak size can change depending on the size of the seeds it eats.
b) the drought caused a mutation that led to larger beak sizes in the finch population.
c) beak size is an inherited trait in the finch population under study.
d) birds that could eat larger, tougher seeds survived and reproduced during the drought.
e) beak size varies among the birds in the finch population under study.
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