Darwin`s Voyage & Observations

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Transcript Darwin`s Voyage & Observations

Darwin’s Voyage
& Observations
His Hypothesis---How life
changes
(Based on his many
observations)
His 14 Finches--descended from a
common ancestor
The Fossil Record
Patterns of Diversity
Darwin Observed…….
A Huge variety of species on
Earth
All seemed well suited to their
environment (adapted)
Why were there no kangaroos in
England?
Species over-reproduce
Not all survive-->Competition
Favorable traits-->Increases
chances of survival
Leads to small changes over
time
ExampleVariation in Blue--footed
Boobies
Webbed or
non--webbed
feet?
Which has the
advantage?
Common Ancestors
(We Have Many)
Reptiles and Birds
Neanderthal man
New Rodent Fossil