Cumulative Exam — Cumulative exam Answers

Wind, solar and geothermal power are called renewable energy sources because _______.a.tax breaks for these sources are renewed every yearb.they are continuously replenishedc.humans can replenish these sources periodicallyd.they produce few toxic byproducts

Which of the following scenarios is representative of how agricultural practices can affect the environment?a.increased oxygen levels in a pond due to fertilizer runoffb.sediment accumulation in a body of water near a farmc.soil compaction caused by tillaged.increased plant growth caused by the application of herbicides

Changes to the global climate could include _______.a.changes to temperatureb.changes to pressurec.changes to precipitationd.all of the above

How can resource conservation benefit the environment?a.Resource conservation can help preserve natural habitats.b.Resource conservation can reduce water pollution.c.Resource conservation can reduce air pollution.d.All of the above

Which of the following is true about ice ages?a.forests are plentiful and commonb.biodiversity is reducedc.ecosystems are createdd.glaciers recede

Which is most likely a source of air pollution?

What electromagnetic wave can cause skin cancer?

How is the world population projected to change in the next few decades?a.It is projected to level off.b.It is projected to decrease steadily.c.It is projected to increase steadily.d.It is projected to double within 5 years.

Which of the following is a possible cost of using renewable resources?a.loss of animal speciesb.land degradationc.lower availability of freshwaterd.all of the above

How does groundwater become polluted?a.Pollutants mixed with water pass through permeable layers above the aquifer.b.Factories dump their waste directly into aquifers.c.Refuse infiltrates the water table when garbage is dumped.d.All of the above

Aquatic organisms that lived hundreds of millions of years ago and were buried in silt and sediment resulted in the formation of _______.a.coalb.biomassc.biofuelsd.petroleum

Which is one way that spring tides are different from regular tides?

Which of the following is a difficulty associated with environmental protection?a.costb.unpredictabilityc.sustainabilityd.all of the above

Why does fossil fuel use in the United States make the U.S. vulnerable to the political wishes of foreign countries?a.The US is a net exporter of fossil fuels.b.Fossil fuels lead to global climate change.c.The US imports much of its petroleum from foreign countries which set the prices.d.All of the above.

Which of the following can be reduced by the use of renewable energy sources?a.social costsb.economic costsc.environmental costsd.all of the above

Which of the following best explains how a hurricane can increase an area’s susceptibility to future storms?a.Storm surges cause massive damage to buildings along coastlines.b.Hurricanes often flood coastal communities.c.Hurricane strength winds cause large amounts of property damage.d.Erosion caused by hurricanes can leave coasts more exposed to storms.

When does the Northern Hemisphere receive the fewest hours of daylight?

During which event is more energy produced compared to other days to turn a turbine?

What is the most important consideration for environmental policy makers?a.popular opinionb.environmental healthc.costd.none of the above

Which of the following could cause a habitat change?a.introduction of an invasive speciesb.a wildfirec.a mudslided.all of the above