Variation of Traits

What is evolution?

• no more individuals of a species left

• changes of a species over time

• the remains of plants and animals

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What is variation?

• no more individuals of a species left

• changes of a species over time

• differences in characteristics

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What is extinction?

• no more individuals of a species left

• changes of a species over time

• differences in characteristics

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Why did giraffes evolve to have long necks?

• to reach water holes

• to reach leaves on tree branches

• to attract mates

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What feature of the pepper moth evolved to allow them to survive when tree bark got darker?

• size of wings

• size of antenna

• colour of the wings

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How do you "win" at natural selection?

• camouflage

• go extinct

• survive and reproduce

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

• natural selection

• mutation

• adaptation

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What is most likely to happen to moth populations in the picture shown?

• Light moths--hunted easily, dark moths--population increase

• Dark moths--hunted easily, dark moths--population increase

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The differences among a species, like different bird beaks, are called

• genes.

• variations.

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Organisms with the most beneficial traits will survive.  This is commonly known as

• ecosystems.

• variations.

• survival of the fittest.

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