Respuesta :

Answer:

competition among individuals for available food sources

Explanation:

Charles Darwin observed a unique beak size and shape in the finch population of each of the Galapagos Islands that he visited.  

-- Which is the most likely cause of the observed variation?

competition among individuals for available food sources

Competition among individuals for available food sources is most likely the cause of the observed variation.

What are the five food sources?

As the MyPlate icon shows, the five food groups are Fruits, Vegetables, Grains, Protein Foods, and Dairy.

What is an example of a food source?

The most obvious examples of the foods we source from plants are fruits and vegetables. All of the fruits and vegetables grow on plants. Another example of food from planted crops. These are rice, wheat, maize, millets, barley, etc.

Learn more about  food sources at

https://brainly.com/question/24635136

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