Human Events and the Environment Answers

How can fertilizer use be detrimental to the environment?a.It can enter waterways, causing them to accumulate an excess of nutrients.b.High levels of fertilizer in bodies of water can lead to excess algal growth.c.Fertilizer can lead to oxygen depletion, and be harmful to organisms in waterways.d.All of the above

Which of the following is a consequence of sedimentation to wetlands?a.increased biodiversityb.water quality improvementc.habitat lossd.decreased turbidity

Which of the following was an environmental consequence of the nuclear meltdown at Chernobyl?a.evacuation of Pripyatb.high levels of radiationc.increased CO2 levelsd.none of the above

Degradates, unlike their parent compounds, are always completely harmless.

What sometimes occurs when reclaimed water is used in agriculture?a.crop deathb.overtillagec.pharmaceutical accumulationd.increased land use

Large-scale fires can lead to a decrease in atmospheric carbon dioxide.

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 the practice of tillage be harmful to the overall environment?a.It can impact waterways through sedimentation and pollution.b.It is harmful to the soil that is tilled.c.Tillage decreases overall crop productivity.d.All of the above

Dryland planting can benefit the environment by reducing the need for tillage.