1.Mouths are quiet.2.Homework in your folder.3.Begin the quick review section of

your notes.4.Raise your hand if you need

something.

Quick Review1. Type of current that changes direction : alternating current2. The amount of force pushing electrons through a wire: voltage3. Characteristic of electricity that must be changed before it can be sent long distances: voltage

Quick Review4. Device that increases or decreases the voltage of electricity: transformer5. Which has a higher resistance, a thick or thin wire? Thin wire. Why? It is more difficult for electrons to flow through a thin wire.

Ecosystems and AdaptationsLesson 6.7 – Evolution

I can explain how adaptations impact an organism’s ability to reproduce and how this leads to natural selection. (3a)

1. When the traits of a species to change over time = evolution2. Explanation for why evolution occurs = natural selection

a. Created byCharles Darwin.b. Natural selection occurs when an environment changes.c. The organisms that have adaptations that help them survive the changes are most likely to survive and reproduce.d. Nature “selects” the organisms that are best adapted.

I can explain how adaptations impact an organism’s ability to reproduce and how this leads to natural selection. (3a)

3. Natural selection can cause evolution because within a species, members of the species are not exactly alike and have differences in their traits = variations4. Natural selection can lead to formation of a new species. The new species cannot reproduce with the old species.

I can explain how adaptations impact an organism’s ability to reproduce and how this leads to natural selection. (3a)

5. If no members of the species have variations that allow them to survive in a changed environment, the species can permanently die out = extinction

I can explain how adaptations impact an organism’s ability to reproduce and how this leads to natural selection. (3a)

Guided Practice WORK WITH US…NOT AHEAD OF US!

I can explain how adaptations impact an organism’s ability to reproduce and how this leads to natural selection. (3a)

Rules1. If you have more than

ONE demerit you are not allow to participate.

2. You must follow ALL directions.

3. It must be SILENT during the activity.

I-N-D-E-P-E-N-D-E-N-T PRACTICEDo you know what that means?

Exit Ticket(5 Questions)

1. Who created the theory of evolution and natural selection?

A. Rudolf VirchowB. Charles DarwinC. Joseph KralikD. Timothy Riggins

2. Which term best describes a specially developed characteristic that enables an organism to live in a specific environment?

A. adaptationsB. natural selectionC. Survival of the fittestD. variations

3. What will likely happen to a species that lacks the variation necessary to adapt to a changing environment?

A. It will undergo many genetic mutations.

B. It will become extinct over time.C. It will begin to reproduce asexually.D. It will become resistant to disease.

4. Which of these supports the theory of natural selection?

A. All organisms produce more offspring than can survive.

B. Organisms live in harmony with one another despite limited resources.

C. Organisms with favorable traits are more likely to die.

D. Over time advantageous traits will be found in more of the population.

5. The Bird of Paradise is a species that has been observed in the jungles of New Guinea. In an attempt to attract females, the males shake their bodies and sometimes hang upside down to show off their bright colors and long feathers. Females generally chose to mate with the “showiest” males. Which concept is supported by these observations?

A. An organism’s individual physical growth can be dependent on behaviors of the population.

B. Asexual reproduction can lead to demanding courtship displays to attract mates for diversity.

C. Behaviors that lead to reproductive success have evolved in species.

D. Strange and vibrant courtship behaviors lead to extinction of particular species.