How are Geologic Evolution and Biologic Evolution related to one another?

• Charles Darwin is the father of evolutionary theory.

That’s what we’re learning about today!!!

• Evolution = Change over time

I’m a genius!

Has music changed over time or is it the way of dancing?

The Evolution of DANCE!(2 minutes)

Evolution is not a fact – but there is a lot of evidence that supports it

Natural Selection

Adaptation

Speciation

Biologic Evolution

Evolution

SURVIVAL OF THE FITTEST!

-NATURAL SELECTION:– Organisms with favorable (good) genes live & pass

on their genes.– Organisms with unfavorable (bad) genes die out.

-Over time, the population will change (evolve) as the organisms with the good genes take over.

You should be:

Natural Selection Example

• Which rabbit has a better chance of surviving in the North Pole? Why?

• THINK, PAIR, SHARE

All the brown rabbits die

Only one white rabbit dies

White rabbits have babies

Now we have ALL white rabbits!

Now assume only fat rabbits can survive the cold

Now we have all fat white rabbits

- We can say that the rabbits evolved into fat white rabbits.- This is an example of EVOLUTION.

• BIOLOGIC EVOLUTION: New species develop from species that already exist

Ex: Finches – Beaks change depending on what food source is available.

How have scientist supported biologic evolution?With EVIDENCE!!!

1. Adaptations2. Fossils

Adaptation• A CHANGE in an organism that allows it

to survive better in their environment.–Organisms must adapt to meet the needs of

their environment or they will die out!!–http://www.youtube.com/watch?v=YpGg-m

8wyY4Where is

everybody??

Examples of AdaptationCamouflage-

Organisms blend in to their environment and are not seen by predators.

http://www.youtube.com/watch?v=XpdoDBYuHIA&list=PLMYb_qWwxCko5ABXT1cGiQOUzfe1XJyXv

Examples of AdaptationMimicry- Organisms copy the appearance

of another more dangerous species so that predators will not bother them.

http://www.youtube.com/watch?v=h4ixUr1Q7Hg

Texas Coral Snake, venomous Mexican Milk Snake, nonvenomous

Which is

the real

wasp?

Wasp

Not a wasp

Not a wasp

Not a wasp

Not a wasp

Not a wasp

How does a species evolve?Speciation is the creation of a new species.

- Speciation takes a LONG time (Thousands, even millions, of years)

http://www.youtube.com/watch?v=8yvEDqrc3XE

WHY does this happen??A species MUST ALWAYS adapt to their

environment.

Confused???

Let’s watch a http://www.learn360.com/ShowVideo.aspx?SearchText=evolution&lid=4922447&ID=132252&player=13

PEPPERED MOTHSpre-industrialization

Which moth would be more fit? WHY???

PEPPERED MOTHSpost-industrialization

Which moth would be more fit? WHY???

http://www.youtube.com/watch?v=AMtT5_AQmLg

Today’s Agenda

1. Collect Homework – Adaptatin Probing question.2. Evolution pt. 2

ACTIVATING STRATEGY – The evolution of Homer

Simpson

How are Geologic Evolution and Biologic Evolution related to one another?

Quick Review

• Geologic evolution causes biologic evolution to occur.– Evolution of Dance II

The music CAUSES the dancing to change, just like crustal plate movement and geologic changes (mountain formation,

seafloor spreading) CAUSE organisms to evolve.

REMEMBER: Organisms MUST adapt to meet the needs of their environment or they will

become extinct (die out).

“Survival is an instinct.”

• Take 3 minutes to SILENTLY and INDEPENDENTLY respond to this quote in your guided notes.

• THINK – What is an instinct?

INSTINCT: A natural tendency.

EXTINCT: No longer in existence.

Key Takeaway

• Species do NOT want to become extinct!!!