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Biology 1
- Theories of evolution
- Lamarck's theory
- Believed that creatures acquired
characteristics during their lifetime.
- The environment caused change
which helps them survive in a habitat.
- Believed that creatures acquired
characteristics during their lifetime.
- Darwin's theory
- Evolution is a continual change
of organisms over a long time.
- The effect of evolution is that species
will become better adapted to their
environment.
- If these species don't adapt they may become
extinct.
- Evolution is a continual change
of organisms over a long time.
- Conclusion: Species evolve over a long period
of time by a mechanisms called "Natural
selection"
- The main evidence is from fossil records.
- The main evidence is from fossil records.
- Lamarck's theory
- Natural selection
- The better adapted members are
more likely to survive.
- There is competition within each
species for food, living space, water
and mates.
- Survivors will pass on characteristics
and genes.
- The better adapted members are
more likely to survive.
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