Unit Test — Unit test Answers

Which of the following statements about energy producing technologies is true?a.Some currently used energy producing technologies have no disadvantages.b.Alternatives to nonrenewable energy sources can be as effective.c.Air pollution is common to all energy producing technologies.d.Alternatives to nonrenewable energy sources are typically more damaging to the environment.

Which human activity is correctly paired with the greenhouse gas that it increases?

Energy producing technologies can positively impact soil fertility.

Collaborations between environmental groups and business interests on environmental issues have resulted in successful partnerships.

Large-scale environmental catastrophes _______.a.result from human activitiesb.have a negative impact on ecosystemsc.affect a variety of environmental factorsd.all of the above

Which of the following statements about the effects of agricultural techniques on the environment is true?a.Fertilizer used for agriculture can enter bodies of water, causing eventual oxygen depletion.b.Pesticides and herbicides are potentially harmful to bodies of water only before they degrade.c.Agricultural practices have limited impact on the surrounding environment.d.Tillage is an important agricultural practice that has no known environmental impact.

How is an ecological footprint determined?a.An ecological footprint is determined by measuring the average amount of land and water that a person in a region uses.b.An ecological footprint is determined by measuring carbon dioxide emissions for a given region.c.An ecological footprint is determined by measuring the rate of water use.d.An ecological footprint is determined by measuring the amount of waste generated in a given region.

Renewable resources can be used without worry about consequences to the environment.

Rainforests around the world are being cleared at an alarming rate to make room for new communities, agriculture, mining, and roads, and to provide lumber for construction and furniture. How might the destruction of rainforests affect the balance of gases in Earth's atmosphere?

Large-scale environmental catastrophes _______.a.result from human activitiesb.have a negative impact on ecosystemsc.affect a variety of environmental factorsd.all of the above

Mosasaurs were large marine reptiles that resembled a cross between a crocodile and a giant iguana. The mosasaurs are believed to have completely died out after a huge asteroid impact caused Earth to drastically change.

Underground mammals, such as the ancestors of moles, are thought to have first evolved as the dinosaurs died out.

Community redevelopment programs are primarily directed towards _______.a.preventing pollution in commercial and residential propertiesb.improving property values by eliminating blighted buildingsc.establishing basic sanitation in urban environments and communitiesd.cleaning up abandoned, unused, and polluted properties

Paulo makes the argument that the asteroid strike that likely contributed to the extinction of the dinosaurs was a short-tem environmental change because it happened so quickly.

Gwen is researching the effects of a small asteroid impact in an area that has started to regrow after being hit ten years ago. She considers the event to be a long-term change because the species of plants that were present had to start completely over from seeds after all of the plants in the area were killed by the impact.What is the error in Gwen’s thinking?

Which of the following statements about the use of hydrokinetic energy is not true?a.Hydrokinetic energy is a commonly used form of energy.b.Hydrokinetic energy requires the movement of waves.c.Hydrokinetic energy can be used without the need to mine materials.d.Hydrokinetic energy generates little waste.

How is the environment affected by a large-scale oil spill?a.Large-scale oil spills are the largest contributor to air pollution.b.Large-scale oil spills lead directly to wetlands becoming deserts.c.Large-scale oil spills are damaging to water quality, aquatic life, and bird populations.d.Large-scale oil spills can lead to an increase in sea levels through glacial melting.

How can global warming lead to changes to the Earth’s surface?a.Global warming can lead to an increased number of earthquakes, which change the Earth’s surface.b.Global warming can lead to glaciers melting, causing flooding to areas and the decrease of glacial land masses.c.Global warming leads to a decrease in water levels of coastal wetlands.d.Global warming cannot lead to changes to the Earth’s surface.

Which describes the greenhouse effect?

Which of the following factors can lead to desertification in the presence of natural drought?a.deforestationb.sustainable grazingc.underground miningd.all of the above