Download Evolution

EVOLUTION
Ie- Change over Time
FOUNDER
Charles Darwin- 1859
STRONGEST WILL SURVIVE
“Adapt to your environment”
Darwin’s
Evidence
Galapagos Islandsgeographically isolated
islands off the coast of
Ecuador
But the real evidence for Darwin
was
The Finches
their Beaks
were adapted
to the food
source on their
specific island
Specific Vocabulary
Natural Selection-happens
over time the strongest
survive to reproduce
(ANIMALS THAT ARE BEST SUITED TO THEIR
ENVIRONMENT WILL SURVIVE AND
REPRODUCE)
Artificial Selection- Specific breeding
done to create specific species
In Plants
and in Animals
DARWIN’S REASONING
Evidence for Evolution
Overproduction
Animals like the sea
turtle overproduce so
that the strongest will
survive to reproduce and
carry on the species
Variation
Animals come in a
variety of sizes and
colors so that the ones
with the best traits pass
on those traits to their
offspring
Adaptation
Any inherited trait that
give a specific animal an
advantage in its
environment
Selection
Natural or artificial
Speciation
The evolution of a new
species from an existing
species
Isolation
Isolation in a remote area
like an Island can cause
a species to change to fit
the environment and
food source
What can lead to the changes
MORE EVIDENCE
Vestigal
Organs
Organs found in the body
that are no longer
needed (ie. appendix)
Homologus Structures
Same on different animals
bone structure of hands
SO THEN WHAT?
Competition leads to species changing
over time and ensuring the
survival of the species through food webs
and chains
Population Density- the amount of animals
of a species in a particular area