Answer :

Final answer:

Darwin observed that finch beak shape varies among species and postulated that beaks had adapted over time to acquire different food sources, as demonstrated by the studies of the Galápagos finches by Peter and Rosemary Grant.

Explanation:

Charles Darwin observed that beak shape varies among finch species and postulated that ancestral species' beaks had adapted over time to acquire different food sources. This is evident in the different beak shapes of the Galápagos finches, as demonstrated by the studies of Peter and Rosemary Grant.

For example, during a period of drought when large hard seeds became scarce, the medium ground finches with smaller beaks were able to survive and reproduce more successfully as they could feed on the abundance of small soft seeds. This led to a decrease in the average bill size of the population.

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Final answer:

The Origin of Species: the Beak of the Finch worksheet is likely about Darwin's theory of natural selection, specifically his observations on finch beak variations in the Galapagos Islands. This presents an example of adaptive radiation, where distinct environments influence the evolutionary path for survival and reproduction. The worksheet likely includes questions about beak adaptations, environmental influences on evolution, and understanding evolutionary trees.

Explanation:

The content loaded Origin of Species: the Beak of the Finch worksheet likely refers to a study assignment related to Charles Darwin's theory of natural selection. One of the most iconic examples in this theory comes from Darwin's study on finches in the Galapagos Islands. Darwin observed that the shape and size of a finch's beak varied from island to island based on the type of food sources available. These variations represented evolutionary adjustments to distinct environments, helping the finches to better survive and reproduce. This phenomenon is known as adaptive radiation.

Typical worksheet exercises on this topic might include questions about the adaptive significance of beak variations, the role of environmental factors in natural selection, and the understanding and interpretation of evolutionary trees. Please consult your respective educational material for the exact answers.

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