Evolution

“The process by which organisms change over time from simple, single-

celled: complex-single-celled: complex, multicellular to complex organisms.”

Nature selects those individuals who are best fit for the environment.

Natural Selection

More offspring are produced than can survive.

Overproduction

Ōkunoshima (大久野島 ?) is a small island located in the Inland Sea of Japan in the city of Takehara, Hiroshima Prefecture. It is accessible by ferry from Tadanoumi and Ōmishima. There are campsites, walking trails and places of historical interest on the island. It is often called Usagi Jima or "Rabbit Island" because of the numerous feral rabbits that roam the island; they are rather tame and will approach humans.

The fight for limited resources.

Competition

Giraffes had to adapt to the reduction in the amount of leaves available by evolving to survive. The ones who couldn’t adapt died of starvation.

Differences among organisms in a species (sexually reproducing organisms have more variation than asexually reproducing organisms)

Variation

Any trait that helps an organism survive and reproduce under a given set of environmental conditions.

Adaptive Value

Wing types of different animals and the evolution of Finches by differences in beak types

The disappearance of an entire species caused by a failure to adapt to a changing environment. Extinction occurs when the Environment changes and the Species cannot adapt.

Extinction

The Tasmanian Tiger/Wolf

The Dodo

Cladograms or family tree.

Ancestry

What you did: Played finches with different beak characteristics competing for food.What you learned: Different environmental conditions (food) favored different species of

finch (beaks), allowing some to survive and reproduce, but not others. (Survival of the fittest)

Natural selection, competition and variation drive evolution. (Species change over time)

Beaks of Finches