A scientist can state that the shape of fich beaks differ because of the variety of seed types available for foraging. This hypothesis is Natural selection.
What is Natural Selection?
The biological evolution through natural selection theory was put out by British biologist Charles Darwin. Natural selection is the theory behind evolution put forth by Charles Darwin. Given the scarcity of resources in nature, animals with heritable features that promote survival and reproduction will typically produce more offspring than their competitors, leading to an increase in the frequency of such traits across successive generations. Populations change throughout time through natural selection, becoming increasingly adapted to their surroundings. Natural selection is dependent on the environment and necessitates the presence of heritable variation within a population.
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