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Science B1b Evolution




The Theory of evolution
The idea behind "the theory of evolution" is that all species have from simple life forms.
Life began on earth 3 billion years ago.

Natural selection
according to the theory of evolution species evolve by natural selection
Individuals in the species show a…

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Science B1b Evolution




o Climate change
o new diseases
o new predators
o new competitors.
Fossil record shows many species have become extinct since life began on our planet,
and this process is still happening.
Individuals compete for space, food and water.

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