Put simply, the pepper moth was a lightish brown and used to live on the bark of trees. As the industrial revolution took place and pollution became a real problem most of the natural habitats of the moth became darkened with soot and so many of the species lost their ability to camouflage and were eaten by birds.
Mutation means that not every moth was born with this light colour. Some months that were born with darker colour avoided this fate and subsequently went on to produce the next generation, and so on.
For some time then, most pepper moths became very dark until we started to clean up our act and reduced the amount of pollution and therefore the darkening of trees etc.
Now the pepper moth has started to regain it lighter colour as the darker moths are now no longer properly camouflaged.
Scientists like to use the pepper moth as a good example of evolution, which of course it is, but creationists point out that this is only evidence of micro-evolution i.e. changes within a species and not macro evolution i.e. one species turning into another.
However, which ever way you look at it, it's proof of evolution. unless of course, God deliberately intervened and helped the poor old pepper moth out in it's time of trouble.
Mutation means that not every moth was born with this light colour. Some months that were born with darker colour avoided this fate and subsequently went on to produce the next generation, and so on.
For some time then, most pepper moths became very dark until we started to clean up our act and reduced the amount of pollution and therefore the darkening of trees etc.
Now the pepper moth has started to regain it lighter colour as the darker moths are now no longer properly camouflaged.
Scientists like to use the pepper moth as a good example of evolution, which of course it is, but creationists point out that this is only evidence of micro-evolution i.e. changes within a species and not macro evolution i.e. one species turning into another.
However, which ever way you look at it, it's proof of evolution. unless of course, God deliberately intervened and helped the poor old pepper moth out in it's time of trouble.