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Evolution Pollution
Theory Acid rain
Natural selection The greenhouse effect
Mutations Pollution
Endangered and extinct species Problems
Fossils Solutions
Key Words Key Words
Human Influence on the EnvironmentBiotechnology
Fertilisers Industrial fermentation
Eutrophication Food production
Deforestation Other products
Intensive farming Key Words
Destruction of the land Gases in our Atmosphere
Pesticides The carbon cycle
Effects on the Environment The nitrogen cycle
What can be done Key Words
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The Theory, Natural Selection, Mutation and Fossils
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(Explanation for theory)
An example is the peppered moth.
They live in woodlands ­ on lichen-
covered trees.
There are two types: light/speckled
form and the dark form
The darker moth was caused by a
mutation and was usually eaten by
predators
In the 1850s the darker moth was rare,
but pollution started to blacken the
trees
They were not at advantage as they
could camouflage
In 1895 most of the population of
moths were dark
In cleaner areas the light moth had the
advantage, so it survived to breed
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