Evolution can be described as a change in a population's gene pool.

Changes in the gene pool can occur by which of the 4 following ways?

• Natural selection

• Genetic drift

• Mutations

• Learning new behaviors

• Migration/

  Gene flow

Tags

NGSS.MS-LS4-4

In natural selection,​ (a)   selects which organisms are best adapted for survival. In artificial selection,​ (b)   select the best.

• humans
• genetic mutations
• nature
• technology

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NGSS.MS-LS4-4

NGSS.MS-LS4-5

The formation of a new species when populations become isolated from each other is called:

• Natural selection

• Genetic drift

• Speciation

• Adaptation

Tags

NGSS.MS-LS4-4

What is the name for extinctions that occur gradually as a natural process, one species at a time?

• Mass extinction

• Background extinction

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NGSS.HS-LS4-5

The specific role a species plays in its environment is called its ___________.

• habitat

• niche

• trophic level

• population density

Identify the apex predator in this energy pyramid.

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NGSS.MS-LS2-3

What percent of energy is transferred to the next trophic level?

• 10%

• 30%

• 50%

• 90%

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NGSS.MS-LS2-3

Identify the producer in this marine food web.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Where do you have the most biomass in a terrestrial ecosystem?

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Photoautotrophs get energy from ​ (a)   .

• the sun
• herbivores
• other producers
• chemicals

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3