Natural Slection

Natural Selection helps:

• Determine which species will become extinct

• Determine species has the best traits or behaviors to survive

• Helps scientists think about species

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NGSS.MS-LS1-4

NGSS.MS-LS4-4

Survival of the fittest means:

• The strongest members a species will survive in all environments and reproduce

• The members of a species that can adapt the best to the new environment will survive and reproduce

• The members of a species that have the most food will survive

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NGSS.MS-LS4-4

The theory that organisms best adapted to their environment are more likely to survive and reproduce.
"Survival of the fittest."

• Natural selection
• Adaptation
• Extinction
• Fossil

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NGSS.MS-LS4-4

Which of these scenarios describes natural selection?

• Grizzly bears with adaptations will have more offspring than other bears. Over time, these adaptations will become more common in the grizzly bear population.

• A grizzly bear learns to adapt to the environment. Over time, most of the grizzly bears in the population will also learn how to adapt to their environment in this way.

• The environment populated by grizzly bears is very cold in the winter. For this reason, grizzly bears choose to grow thicker, warmer coats of fur.

• The environment has caused grizzly bears to grow warm coats of fur. This allows them to stay warm in the winter and survive in this harsh environment longer than other bears.

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NGSS.MS-LS4-4

This is an example of which of the following?

• active transport

• natural seleciton

• homologous structures

• common ancestry

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

Why is natural selection important:

• Some members of a species adapt to the environment to survive

• All the members of the species are extinct

• Some members of the species are able to learn from their environment

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NGSS.MS-LS4-4

What does extinction mean?

• All organisms die

• All the members of the species die

• All the male die

What it could cause an species to go extinct:

• Not having enough dna

• Not being able to adapt

• Not being able to make enough food

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Mutations are changes in what:

• The DNA code

• In the brain

• In the body parts

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NGSS.MS-LS3-1

How do Mutations differ from Adaptations?

• Adaptations are take a long time and are always good

  Mutations are quick and are not always good

• Adaptations are quick and are always bad

  Mutations are quick and are not always good

• Adaptations are take a long time and are always good

  Mutations are slow and are always bad

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NGSS.MS-LS3-1