Natural Selection and Ecosystem Services

Which of the following is true?

• Mutations are caused by selective pressure

• Mutations are random, selective pressure makes an existing mutation more or less frequent

• Mutations are controlled by the needs of the organism

• Mutations cannot be passed down through generations

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NGSS.HS-LS3-2

NGSS.HS-LS4-2

Which best describes natural selection?

• Natural selection is when some individuals die in random events

• Natural selection is when some individuals survive better then others and spread their traits to offspring

• Natural selection is when a species splits in two

• Natural selection is when there is an error in copying DNA, changing the trait

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NGSS.MS-LS4-4

If natural selection causes two populations of the same species who live in different environments to diverge, what happens if given enough time?

• Nothing, the species will always remain the same

• The species can split into two different species (speciation)

• The two populations will always be able to interbreed

• The species will go extinct

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NGSS.MS-LS4-1

NGSS.MS-LS4-4

Anthropogenic means

• Dangerous

• Human-caused

• Pre-existing

• Old

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NGSS.MS-ESS3-4

A forest being used as a camping site is an example of a _____ ecosystem service

• Provisioning

• Regulating

• Supporting

• Cultural

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NGSS.MS-LS2-5

Which of the following would NOT be an example of a range of ecological tolerance?

• The specific temperatures corals can withstand without bleaching

• The range of soil pHs in which corn grows best

• The hours of daily sunlight required for a fern to survive

• The number of predators an ecosystem can hold without the predators starving

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NGSS.MS-LS1-5

What happens if conditions move outside of the range of ecological tolerance for a species?

• They will instantly die

• First, their fitness will increase. As conditions become more extreme, deaths will decrease.

• First, some individuals will die. Then, others will lose their fitness.

• First, their fitness will decrease. As conditions become more extreme, deaths will increase.

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NGSS.MS-LS1-5

NGSS.MS-LS4-4