Scientists who studied Natural
Selection
Charles Darwin
studied birds on the
Galapagos Islands
during the 1850s.
Henry Kettlewell
studied moths in
England during the
1950’s
Camouflage of Peppered moths
Peppered moths use camouflage to
hide from predators such as birds.
The colour of the grey moths
blends in nicely with the
colour of tree bark
Industrial Revolution
During the 19th and 20th century factories
produced a lot of pollution.
The soot from the factories slowly
turned the colour of the bark black
What do you think happened to the gray
peppered moths?
Black Peppered Moths
There were Black coloured moths in England as well,
but they were very rare and didn’t breed on trees.
After the industrial
revolution coloured tree
bark dark, they suddenly
appeared everywhere.
Why do you think that happened?