1st i got say its talk about the animals' out look and natrul change by the different evioment. in another words, anmial survive when they go with the evioment and die when the not.
the out envioment choose the livings, force the livings pass their genins to a centain driction.
EXAMPLE: Woodpecker Finch on the Galápagos Islands
the Woodpecker Finches live saperately on the Galápagos Islands, each island has different enverioment, as a result, the Woodpecker Finches in different islands have different beak in order to gowith the different food supply on the islands.
the out envioment choose the livings, force the livings pass their genins to a centain driction.
EXAMPLE: Woodpecker Finch on the Galápagos Islands
the Woodpecker Finches live saperately on the Galápagos Islands, each island has different enverioment, as a result, the Woodpecker Finches in different islands have different beak in order to gowith the different food supply on the islands.
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