Practice Quiz 4.2 & 4.3 - Energy Flow Human Impact

The diagram represents an energy pyramid.  From trophic level A to B, the percent of energy that moves up the pyramid is?

• 90%

• 10%

• 33%

• 75%

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NGSS.MS-LS1-6

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The burning of forests and fossil fuels releases carbon into the carbon cycle. How could this impact an ecosystem?

• The amount of organic carbon in the soil could decrease.

• The amount of carbon dioxide dissolved in oceans could increase.

• The amount of organic carbon in the atmosphere could decrease.

• The amount of carbon dioxide available for photosynthesis could decrease.

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NGSS.MS-ESS3-4

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In the following food chain, which organism is considered the secondary consumer?           Grass → Rabbit → Snake → Hawk

• Hawk

• Grass

• Rabbit

• Snake

An animal population decreases from 800 individuals to 600 individuals. Which of the following could explain this change in population size?

• The number of predators for an animal population increased.

• The number of animals that emigrated from the population decreased.

• The number of breeding pairs in the animal’s population increased.

• The number of species competing with the animal for food decreased.

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NGSS.MS-LS2-4

If you were a water droplet in a cloud, what process would you use to move directly to the ocean?

• evaporation

• precipitation

• condensation

• runoff

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NGSS.MS-ESS2-4

What is it that is being lost to the environment as energy is transferred up trophic levels in ecosystems?

• Nutrients from the soil.

• Living space for the organisms.

• 90% of that energy as heat.

• Food sources.

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NGSS.MS-LS2-3

If a new predator that exclusively feeds on insects were to be introduced that had no natural predators in this food chain, what would happen over time?

• The insect population would increase.

• The plant population would increase.

• The mouse population would increase.

• The owl population would increase.

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What will most likely result if all of the primary consumers were completely removed from the ecosystem in the figure?

• Prairie rattlesnakes will become herbivores.

• Golden eagle and kit fox populations will decrease.

• Sagebrush grasshoppers will consume soil bacteria.

• Silk grass and sand sagebrush populations will decrease.

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NGSS.MS-LS2-1

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The illustration below shows living and nonliving factors that interact in a certain area.  What term best describes the interactions shown in the diagram?

• biome

• food chain

• ecosystem

• population

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NGSS.MS-LS2-1

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The greatest reduction in greenhouse emissions would result from which of the following changes?

• Increasing deforestation to create more biomass.

• Investing in more renewable energy sources.

• Building more coal-fired power plants.

• Manufacturing more natural gas.

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NGSS.MS-ESS3-5