Population Dynamics Quiz 1

This graph shows an increase in the population of humans in a city. TWO ways that populations get bigger are...

• Births

• Deaths

• Immigration

• Emigration

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HS-LS2-1

On average, sharks have a doubling time of two years. Doubling time refers to...

• the time it takes for a shark to double in size
• the time it takes for a population to double in size
• the time it takes for a shark to reach maturity
• the time it takes for a shark to lay eggs

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HS-LS2-1

Which of these factors would cause a bear population to emigrate?

• More plants grow in a forest

• The size of a forest increases

• Plants produce fewer berries each year

• More bears are available to mate with

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HS-LS2-1

There are 20 deer living in a forest. By the end of the year, only 3 new deer were born. 15 deer died that year. 2 deer left the forest. However, 30 deer migrated into the forest. How did the size of the deer population change by the end of the year?

• The population size INCREASED.

• The population size stayed the same.

• The population size decreased.

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HS-LS2-1

This graph shows the number of whales seen near an island. Select the marker(s) that indicate a period when there were more deaths and emigration than births and immigration.

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HS-LS2-1

Researchers are studying the population size of sharks in a bay. Which graph would show that the population of sharks is unlimited by resources?

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HS-LS2-1