Imagine that these finches did all live on the same island. they were able to co-exist because they survived on different foods. imagine a change in climate, a drought, and certain plants were no longer able to survive on the island. seeds that were a food resource become scarce. you might expect all but one of these things to happen among the finch populations. that is
a) not all of the finches are able to survive.
b) some finches fly to nearby islands to find food.
c) beak shapes changed so finches were able to eat other food resources.
d) finches with beaks adapted for insect catching are more likely to survive.