Data was collected concerning Galapagos bird beak size over time. There are 13 types of Galapagos finches, and they are also known as Darwin's Finches. These finches share the same habits and characteristics except for one; they all have different beaks. The differences in their beaks might be the most important aspect of their survival because beak size determines the type of seed able to be eaten. Only the birds with the largest of beaks are able to eat the toughest, biggest, and spine covered seeds. Based on the data given, choose the BEST conclusion.

Only the birds with the largest of beaks are able to eat the toughest, biggest, and spine covered seeds. Which is not right because some other Galapagos Birds might have some other way eat those seeds with their finches

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lheduardomarques lheduardomarques · Answer 2 · 2022-03-18T13:23:39+01:00

The best conclusion is that competition of Darwin's Finches, which is particularly severe during dry periods because of food scarcity, favors those individuals best adapted to their environment.

Adaptation of Darwin Finches

Different ecological environments within the same island lead to nutritional specializations characterized by differences in beak between different finches species.

Furthermore, it has been shown that to improve the range of mating calls, those finches that live in the densely vegetated zones have a different call than those that live in the sparsely vegetated areas.

This phenomenon increases the probability of finding a pair which is part of the same milieu (environment): from there, the stabilization of genetic characteristics specific to the ecological environment takes place.

With this information, we can conclude that competition, which is particularly severe in periods of drought due to food shortages, favors the individuals most adapted to their environment. Because they have a greater chance of survival and, therefore, of reproduction, their particular genetic characteristics tend to be passed on to subsequent generations.

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