Observations that Led Charles Darwin to Suspect Organisms Change Over Time

Observation of Bird Beaks

During a trip to the Galapagos Islands, Charles Darwin observed that the beaks of birds were specific to the types of food available on the different islands. This led him to suspect that organisms change over time based on their environment.

Island Finches Resembling Mainland Finches

Another observation that led Charles Darwin to suspect that organisms change over time was the fact that the island finches closely resembled the mainland finches, but were not exactly the same species.

Answer:

Beaks of birds, for example, are specific to what food is around them.

Explanation:

This observation indicated that organisms adapt to their environment, leading to changes over time.

Answer:

Island finches resembled mainland finches, but were not the same species.

Explanation:

This observation showed that species can evolve differently based on their location and available resources.