Peppered moth

So there is this little creature called the peppered moth. It has a beautiful speckled pattern on its wings and body. Before, there used to be more light-colored peppered moths than dark ones. Do you know why? It's because when they were sitting on a light-colored surface like a tree trunk, they could blend in better and avoid being eaten by predators. But something happened that changed this.

In the 19th century, factories were built and they released a lot of dirty smoke into the air. This made it harder for the light-colored peppered moths to hide from predators because the trees were getting darker due to the pollution. The dark-colored peppered moths, on the other hand, were able to blend in better and avoid being eaten because they were camouflaged against the darker tree trunks.

So over time, the number of peppered moths that were dark-colored increased because they were able to survive and have babies more easily. This is called natural selection.

But then, as we realized that pollution was bad for the environment and tried to reduce it, the number of light-colored peppered moths started increasing again because they could blend in better with the lighter tree trunks.

So in summary, the peppered moth's color changed over time because of pollution and natural selection but then went back to its original color when we tried to reduce pollution.