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kirstygb14 Inglés 1 página

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Basic Ideas:

All the different species have evolved from simple life forms.

These life forms first developed 3 billion years ago.

Key Points:

Individuals in a species show a wide range of variation.

This variation is because of the differences in genes.

Key Points: Individuals in a species show a wide range of variation. This variation is because of the differences in genes.

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