Transcript The Nature of Science

AdaptationA
characteristic that helps
organisms to survive in their
environment.
Eagle
 Adaptation talons
food.
to grab
Pelican
 Adaptation pouch
food.
to scoop
Heron
 Adaptation
sharp beak
to spear
food
Woodpecker
 Adaptation small
pointed
beak tip to
grasp food
Natural Selection“survival of the fittest”
1. There is variation within
each species.
2. Animals with traits that help
them survive have more
babies.
3. Then a large part of the
population has the good
trait.
4. Over many generations,
the population changes.
(even leading to a new species)
5. Animals that can not
compete die out.
Dodo Bird – extinct 1681
6. The entire species
changes over time
Fitness The
ability
to survive
and
reproduce
offspring
High
Fitness
Low
Fitness
Now complete lab introduction
 Eagle
 Fork
– talons
 Pelican
 Spoon – scooping
 Woodpecker
 Chopsticks – grasping
 Heron
 Knife - Spearing
Why did Miss Spiegel
make you play bird?
 What
bird was the best at
getting food in this habitat?
 THE SPOON BIRD
 What bird had the most
chicks?
 THE SPOON BIRD
 If
these birds were on a distant
island, what bird would you
expect to see the most of if
you came back in 500 years?
 THE SPOON BIRD
 Do you think any would go
extinct?
 THE CHOPSTICK, KNIFE MAYBE