Amplify Populations and Resources Vocabulary

Scientists have been studying the size of three populations in a region. In this ecosystem, lions eat wild pigs, and wild pigs eat frogs. The data showed that all three populations were stable. Then the frog population decreased suddenly. What will likely happen to the size of the wild pig population as a result? The size of the wild pig population will . . .

• increase because the wild pigs and lions will find energy storage molecules elsewhere.

• decrease because there are less energy storage molecules available.

• stay the same because the lions are still stable.

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Scientists have been studying the size of three populations in a swampland. In this ecosystem, herons (a type of bird) eat frogs, and frogs eat dragonflies. The data showed that all three populations were stable. Then the dragonfly population increased suddenly. What will likely happen to the frog population as a result? The size of the frog population will . . .

• increase

• decrease

• stay the same

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

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Scientists have been studying the size of three populations in Peru. In this ecosystem, pumas (large wild cats) eat deer, and deer eat grass. The data showed that all three populations were stable. Then the puma population increased suddenly. What will most likely happen to the size of the deer population as a result? The size of the deer population will . . .

• increase

• decrease

• stay the same

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Define competition

• the ability to make things move or change

• a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms

• a population that eats organisms from another population

• when two or more populations use the same resource, such as the same food source

What is the term for the maximum population size that an environment can sustain indefinitely?

• Carrying capacity

• Biotic potential

• Population density

• Limiting factor

Which of the following is a renewable resource?

• Coal

• Natural gas

• Solar energy

• Uranium

What is the primary source of energy for the Earth's climate system?

• Geothermal energy

• Nuclear energy

• Solar energy

• Wind energy

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Which process describes the movement of individuals into a population?

• Emigration

• Immigration

• Migration

• Dispersal

What is the term for a species that has a disproportionately large effect on its environment relative to its abundance?

• Dominant species

• Keystone species

• Endemic species

• Invasive species

Which of the following is an example of a density-dependent factor affecting population growth?

• Earthquake

• Flood

• Disease

• Temperature