Natural selection

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

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scientific theory

• a description of a natural phenomenon

• a guess

• a well tested explanation for a wide range of observations and experimental results

• a fact that will never ever change

Natural Selection is driven by a change in the environment and survival of the

• Earth

• Fastest

• Fittest

• Biggest

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

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Almost all adaptations started off as?

• selective breeding

• physiological

• structural

• mutation

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Mutations are a change in what?

• DNA

• tRNA

• protein

• rRNA

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The more genetic variation a population has,

the more likely it is for some individuals to

• evolve

• migrate

• survive

• mutate

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Why do frogs and other organism reproduce so many eggs or offspring?

• so that their babies can have friends to play with

• the more offspring the more likely the offspring will survive

• the more offspring the less likely offspring will survive 

• the more offspring the less competition

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Why is competition important for natural selection?

• It shows which variations are more successful, allowing the organisms with those variations to survive.

• It causes organisms to die out, reducing the population size.

• It causes organisms to get stronger

• Competition is not important for natural selection.

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How do you "win" at natural selection?

• survive

• go extinct

• survive & reproduce

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