The Galapagos Islands are where Charles Darwin:

• Wrote "On the Origin of Species"

• studied unusual animals such as tortoises, finches and iguana's

• was exiled after his theories were proven unpopular

• was born and raised

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The beaks of finches found on various Galapagos Islands differed based on:

• size of the island

• length of their wings

• what was available for food

• the predator that hunted them

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What is a common ancestor?

• an animal that has a lot of offspring (babies)

• an animal from which 2 or more species evolved

• an animal that is related to many other species

• an animal that is good at escaping from predators

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What is least likely to be an example of a variation within a species?

• birth weight

• hair color

• number of offspring (babies)

• number of limbs (ex: hands & feet, paws)

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Which of the following is an example of an environmental pressure?

• air pressure in the atmosphere

• breeding between two members of the same species

• a lake that gradually running out of water

• a flight between 2 members of the same species

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

• the biggest organisms

• the best adapted organisms

• the best smartest organisms

• the best fastest organisms

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Which variation would be most likely to benefit any organism, regardless of environment?

• The ability to produce energy more efficiently.

• The ability to swim deeper.

• Bigger claws and teeth.

• Markings that it blend into its background.

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

• causes the population to shrink

• helps prey escape predators

• gets passed long from generation to generation

• has brought out a new species

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Dogs are an example of:

• common ancestor

• selective breeding

• extinction rates rising

• the natural pace of evolution

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

• go extinct from environmental pressures

• evolve into the closest species on the tree's trunk

• give rise to species farther down the branch

• are less fit than species in the middle of a branch