Unit Test — Unit test Answers

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.

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.

The U.S.-Mexico border 2012 program’s goal is to _______.a.prevent illegal immigrationb.improve transboundary ecosystem healthc.promote joint economic developmentd.reintroduce endangered species

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?

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

How do natural disasters weaken a community’s social infrastructure?a.Social systems are unbalanced by the damage caused by natural disasters.b.Natural disasters tend to target the poorest members of a community.c.The number of natural disasters is increasing across the globe.d.Natural disasters can cause billions of dollars in property damage.

It is best to say that the protection to properties offered by sea walls along coasts _______.a.decreases the present and future risk to human propertiesb.increases both the present and future risk to human propertiesc.decreases the present but increases the future riskd.increases the present but decreases the future risk

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 sustainable practice is paired correctly with its impact on the environment?

Which of the following is not a way in which carbon sequestration can benefit soil?a.decreased erosionb.increased water qualityc.increased water storaged.increased soil quality

Efforts are being made to restore and protect the critical wetland and estuary ecosystems.

What are sustainable use practices?

Which of the following substitutions can help reduce air pollution?

How do conservation tillage practices lead to agricultural sustainability?a.Conservation tillage practices reduce the amount of water required to grow crops.b.Conservation tillage practices help reduce soil erosion and maintain soil nutrient levels.c.Conservation tillage practices naturally protect crops from insect damage, reducing the need for pesticides.d.Conservation tillage practices reduce the amount of energy needed to produce crops.

Which results from an increase in the greenhouse effect?

Which of the following large-scale environmental catastrophes has the least effect on aquatic ecosystems?a.oil spillsb.deforestationc.global warmingd.pollution

Tillage can release pollutants in the soil and

One of the infrastructure challenges of community redevelopment programs is to establish safe, clean, sources of drinking water.