One clear example of Darwin's ideas is the peppered moth.

• Before the Industrial Revolution: Most of these moths were light-colored. This helped them blend in with the trees.
• After pollution darkened the trees: The darker moths had a better chance of surviving.

Another example is the Galápagos finches.

• These birds changed the shape of their beaks based on the food they could find.
• When their environment changed, new types of finches developed.

These examples show us how nature picks the traits that help living things survive!