Adaptation

Adaptation (African Penguin)

In biology, an adaptation is a trait that evolves by natural selection through generations. An adaptive trait tends to improves the organism's fitness. An example is the African Penguins'  fur. The black and white colors allow them to camouflage and hide from predators. Viewed from above, the black back fades into the ocean depth, and the white belly blends into the bright ocean surface.