Transcript Clarifying ?s Information

Learning Target: I will understand how
an organism’s ability to adapt affects
its survival in changing ecosystems.
Evolution
pgs. 79-80
01/07/2013
Know: (pg 79)
What do you know about evolution?
“I don’t know anything.” is not an acceptable answer.
Use complete sentences.
Evidence
Choose any vocabulary word EXCEPT competition– draw
the definition of the word you chose.
Clarifying ?s
Evolution
Information
Who?
Charles Darwin was a naturalist (studies nature) traveled for 5 years
on the HMS Beagle (a British ship). He made/recorded observations of
plants and animals. Galapagos Islands.
species
- a group of similar organisms that can mate with each other and
produce fertile offspring
Darwin took note of similarities and differences between mainland
and island birds and animals.
- characteristics that help organisms survive and reproduce
Example: the shapes of birds’ beaks
- a gradual change in a species over time in order to adapt to
new conditions in the environment
adaptations
evolution
natural selection
- individuals who better adapt to their environment have a better chance
to survive and reproduce
FYI - The phrase “Survival of the fittest” was introduced by
Herbert Spencer, a contemporary of Charles Darwin. The
phrase essentially means the same as “natural selection.”
overproduction
- when a species produce more offspring than the environment can
support
Page # 80
Clarifying ?s
Evolution
Information
competition
- food and resources are limited. Species compete with each
other to survive.
Example: A musk ox's diet -plants sedges and grasses, a
caribou's --berries, grass and sedge. When food is hard to
find in the tundra, they compete for food.
variation
- any difference between individuals of the same species
Example: coloring– blue vs brown eyes
- Species with traits that promote survival live and reproduce. Over time,
traits that do not promote survival are not carried to the next generation.
When a group separates from a species over several generations,
different traits evolve.
Example: Grand Canyon Squirrels - The kaibab
squirrels and the albert squirrels were separated by
the natural barrier (the Grand Canyon) They started out
as the same species but, eventually developed into
two separate species of squirrels.
selection
New species
Summary:
Clarifying ?s
Who?
species
adaptations
evolution
Evolution
Information
Charles Darwin was a naturalist (a person who studies nature) who
traveled for 5 years on the HMS Beagle (a British ship). He made and
recorded thousands of observations of plants and animals. His best
known research was done in the Galapagos Islands.
- a group of similar organisms that can mate with each other and
produce fertile offspring
Darwin took note of similarities and differences between mainland
and island birds and animals.
- characteristics that help organisms survive and reproduce
Example: the shapes of birds’ beaks
- a gradual change in a species over time in order to adapt to
new conditions in the environment
natural selection
- individuals who better adapt to their environment have a better chance
to survive and reproduce
FYI - The phrase “Survival of the fittest” was introduced by
Herbert Spencer, a contemporary of Charles Darwin. The
phrase essentially means the same as “natural selection.”
overproduction
- when a species produce more offspring than the environment can
support
Clarifying ?s
Evolution
Information
competition
- food and resources are limited. Species compete with each
other to survive.
Example: A musk ox's diet plants- sedges and grasses. A
caribou's eats berries, grass and sedge. When food is hard to
find in the tundra, the two compete for food.
variation
- any difference between individuals of the same species
Example: coloring—blue vs. brown eyes
- Species with traits that promote survival live and reproduce. Over time,
traits that do not promote survival are not carried to the next generation.
When a group separates from a species over several generations,
different traits evolve.
Example: Grand Canyon Squirrels - The kaibab
squirrels and the albert squirrels were separated by
the natural barrier (the Grand Canyon) They started out
as the same species but, eventually developed into
two separate species of squirrels.
selection
New species
Summary:
This PowerPoint was created by Tim Paterek and Charlene Shea. All
pictures came from Google Image Search. To fall within the Fair Use
Guidelines, this PowerPoint must be used within the confines of the
classroom and may not be published back onto the Internet.