Here you can see that there are both white and brown Peppered Moths. The white ones blend in with the white bark on tress so they can disguise and hide away from predators. The brown moths are more obvious to predators, like this lizard, therefore they are what he will eat.
Sadly, there are minimal brown Peppered Moths left as majority have been eaten. There are many white moths left as they can still camouflage with the trees to hide.
Sadly, due to the Industrial Revolution which started in 1760, because of all the pollution and dust dropped, the tress becamse darker and more borwn over time.
Now that the brown moths can blend in, the white moths became the pray and they are now the main target of predetors
After some time, other animals ate the white moths as they were more prominent and stood out leaving only a very small amount left, but sadly they were eaten as well.
Now, after the affects of evolution, there are only brown Peppered Moths left in the wild.