Units 9-10 Warmup Review

What must happen for the carbon cycle to continue in this terrarium?

• All organisms must continue to exchange gases

• The snails must double their production of carbon dioxide

• The plant must produce carbon dioxide at a faster rate

• The decomposers must begin to produce oxygen

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In nature, which type of behavior causes animals to produce aggressive displays and sounds?

• Imprinting

• Territoriality

• Conditioning

• Habituation

In some ecosystems, wolves have been eliminated due to their threats to humans. How can the reintroduction of wolves benefit the ecosystem?

• It can eliminate weak animals from a prey population, thereby decreasing competition for natural resources.

• It can eliminate the most fit animals among the prey population, which will cause an increase in birthrates of the prey.

• It can cause the prey population to migrate to other areas, resulting in more fit prey.

• It can cause the prey population to better blend in with their environment.

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Which graph best illustrates the growth of a population introduced into an environment with limited resources?

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What will most likely occur if the population of the world continues to increase at predicted rates?

• There will be an increase in biodiversity as a result of improvements in technology.

• There will be more rapid depletion of natural resources.

• The human race will rapidly become extinct.

• All human diseases will be eliminated.

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NGSS.MS-ESS3-4

What will most likely be the result as humans move into new areas, forests are cleared, and housing developments are built?

• Global temperatures will decrease because trees are removed

• Many organisms will lose their homes because their habitats have been destroyed

• Better sanitation in the area will reduce the amount of pollution

• The rainfall in the area will increase because there will be increased runoff

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Which will most likely result in a negative growth rate in the human population of a country?

• The death rate is higher than the birth rate

• The birth rate is higher than the death rate

• The country has improved economic conditions

• The country has made improvements in sanitation

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NGSS.HS-ESS3-1

What will most likely happen if a nonnative species is introduced into a stable ecosystem?

• The native species will change their diet, and the ecosystem will remain stable

• The native species will move to another area, and the ecosystem will remain stable

• The native species will have to compete for resources with the nonnative species, and the ecosystem will become unbalanced

• The native species will share their food with the introduced species, and the ecosystem will become unbalanced

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What activity most contributes to the depletion of the ozone layer?

• burning fossil fuels

• release of chloro-fluorocarbons (CFCs)

• deforestation

• overuse of fertilizers

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Why are many farmers encouraged to plant different types of crops on the same land throughout the year?

• It prevents insects from destroying crops

• It provides more food to other countries

• It allows for more genetic variation in plants

• It helps to preserve the quality of the soil.

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