The Theory of Natural Selection
Gap-fill exercise
Organisms produce large numbers of
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
- some of these will not live long enough to
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
themselves.
In any species there is
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
between the individuals.
Organisms with the useful
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
are more likely to survive and pass them on to the next
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
.
For example - Galapagas Finches
Darwin studied the finches on the Galapagos Islands. He noticed that
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
finches had different
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
- some for eating seeds and some for eating
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
.
Darwin suggested that the seed-eating finches has reached the isalnds from the mainland, but there was not enough
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
for all the finches. Finches with slightly different
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
beaks were able to eat other
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
of food.
They were able to
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
and passed on their adaptations to their
beaks
characteristics
different
food
generation
insects
offspring
reproduce
shaped
survive
types
variation
.
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