The medium ground finch lives on the Galapagos Islands. Birds with beaks of all sizes were originally part of this population. The finches are seed eaters. The types of food available for them to eat depends on the weather. During wet years, there is a large variety of food. During dry years, there is less food, and large, tough seeds are more abundant than small seeds. After a long drought, researchers noticed certain differences in the population of medium ground finches living compared to those who lived before the drought. What was different about the finches after the drought?

Finches after drought had stronger and larger beaks to demolish the harder and larger seeds that the drought brought, a difference from those that lived in wet times that had smaller, pointy beaks to eat smaller seeds.

Explanation:

This is called the theory of animal evolution, where animals adapt according to the environment, this theory was just analyzed by this species of animals and many more on the island of Galapagos by Darwin.

What I also approve of as that animal that survives a certain environment is the one that is considered most suitable to live in that place.

i just learnt this recently but i need to look through my notes again