Natural Selection BrainPOP: quiz

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the best adapted organisms

In the phrase "survival of the fittest" the term "fittest" refers to:

give rise to species farther down the branch

On Darwin's tree of life, organisms at the base of a branch:

studied unusual animals

The Galapagos Islands are where Charles Darwin...

the available food supply

The beaks of the finches found on varies Galapagos Islands differed based on:

an animal from which two or more different species evolved

What is a common ancestor

number of limbs

What is least likely to be an example of variation within a species: -birthweight -haircolor -number of offspring -number of limbs

selective breeding

Dogs are and example of

gets passed along from generation to generation

When nature "selects" a variation, that means that the trait:

A lake that is gradually running out of water

Which of the following is an example of environmental pressure: -the air pressure in the atmosphere -breeding between two members of the same species -a lake that is gradually running out of water -a fight between two members of the same species

the ability to produce energy more efficiently

Which variation would be most likely to benefit an organism, regardless of environment: -the ability to produce energy more efficiently -the ability to swim deeper -markings that help it blend into it's background -bigger claws and teeth


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