Unit 2.2 Human Impact Review

Demand for farmed aquatic fish and plants has increased in recent years. How will this demand impact the natural ecosystems that were previously overfished?

• Local populations will stabilize.

• Biodiversity will decrease.

• Food webs will collapse.

• The ecosystem will degrade.

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DDT is a pesticide that has been used worldwide over the past 50 years. Which statement best explains why environmental monitoring for DDT was performed?

• To evaluate in what ways DDT impacts an ecosystem.

• To monitor the possible harm DDT causes to human populations.

• To predict if all chemicals are harmful to insects.

• To ban all chemical to protect public health.

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Over the past few years, lead and copper levels within Flint, Michigan's water supply have significantly dropped. Why is it still important to public health to continue monitoring the lead and copper levels despite this drop?

• Because old pipes could start leaking chemicals back into the water supply.

• So, public service announcements can be made to stop littering.

• So, city officials can order more medicine if levels rise again.

• So, the city can shut down treatment plants and build more factories if levels keep decreasing.

Which of the following ideas would be the best way to decrease CO2 emissions and land temperatures?

• Increase the number of waste disposal and treatment plants.

• Decrease land use and biomass burning.

• Phase out agricultural production.

• Develop alternative energy sources.

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Orlando is closing one of its sewage plants and the sewage is going to be rerouted to another plant. Why is it important for the EPA (Environmental Protection Agency) to monitor water quality around each sewage treatment plant before moving forward with the plan?

• Monitoring ahead of time will allow better evaluation of the environmental impacts.

• They don't need to collect data because the effects cannot be determined until after the decision is made.

• Showing water quality is high will support the city's decision.

• Monitoring before rerouting can determine the environment's sewage load.

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Which of the following identifies a benefit of non-renewable energy?

• Scientific advances allow us to synthesize fossil fuels to make it renewable.

• If we continue to use fossil fuels, then ecosystems will be healthier.

• There will be less disturbance to environments because infrastructure is already in place.

• Removing non-renewable energy sources will stabilize abiotic factors.

Humans recently began to restore habitats for butterflies. What will most likely happen to the butterfly population because of the habitat restoration?

• The butterfly population will go extinct.

• The butterfly population will increase.

• The butterfly population will evolve.

• The butterfly population will emigrate.

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Which of the following explains why the graph shows a cost of using solar energy?

• There is no cost to solar energy.

• There are many different resources that are needed to make a solar panel and they are expensive.

• It is cleaner than non-renewable energy.

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Which of the following correctly identifies an abiotic factor that will impact populations?

• Organisms compete for resources.

• A parasite invading a host.

• Predators eating herbivores.

• Seasonal variations in temperature and rainfall.

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Which of the following best strengthens the argument to switch to renewable energy?

• Renewable energy releases less carbon dioxide, which will decrease the effect of global warming.

• Observations that when people switch to renewable energy their energy bills increase.

• Charts that show the money cost of renewable energy is higher than non-renewable energy.

• Graphs of energy consumption of other countries switching to renewable at the same time.

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