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

• imprinting

• territoriality

• conditioning

• habituation

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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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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Which statement best explains why animals are considered heterotrophic?

• They are able to produce food through the process of photosynthesis.

• They are able to produce food through the process of respiration.

• They are able to obtain nutrients by decomposing plant and animal tissue.

• They are able to obtain nutrients by consuming other organisms or their products.

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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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What will most likely be the result as humans move into new areas, forests are clear cut 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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What activity most contributes to the depletion of the ozone layer?

• burning fossil fuels

• release of CFCs

• deforestation

• overuse of fertilizers

The graph above represents the growth of a population in an area of....

• infinite resources

• limited resources

• no competition

• courtship.

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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

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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