Cumulative Exam — Cumulative exam Answers

The traditional view of mangrove forests as wastelands and unhealthy environments helped promote their degradation because _______.a.mangrove forests are unproductive, unhealthy habitatsb.people did not feel it was necessary to preserve themc.mangrove forests do not need to be preservedd.all of the above

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 aspects of society is the least affected by limiting factors?a.locationb.healthc.behaviord.stability

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 not a negative consequence of upward urban growth?a.pollutionb.creation of a “heat island”c.increased use of surrounding landd.waste management issues

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

Which of the following statements about water policy is true?a.The United States does not regulate water quality.b.Policies regulating water pollution and water quality have eliminated environmentalists concern about water.c.Current laws in place about water policy would eliminate water quality problems if they were enforced.d.The Clean Water Act has helped reduce water contamination, but further efforts are needed to maintain water quality.

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

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

Which of the following methods of agriculture is best suited to the use of large plowing and harvesting equipment?a.rangeland grazingb.American agriculturec.traditional rice cultivationd.Dutch agriculture

The amount of available energy changes between the trophic levels found in a food chain or energy pyramid. Photos (left to right) by Mehmet Karatay, Jens Buurgaard Nielsen, Furryscaly, and Walter Siegmund How would the amount of available energy differ in the trophic level of the mouse compared to the trophic level of the hawk? a. Available energy would increase from the mouse to the hawk. b. Available energy would decrease from the mouse to the hawk. c. Available energy would initially increase from the mouse to the hawk, and then decrease over time. d. Available energy would remain the same from the mouse to the hawk. Please select the best answer from the choices provided

Which of the following practices that are needed to run a nuclear power plant has a negative impact on both air and water? a. cooling of the power plant b. mining of uranium c. storage of radioactive waste d. monitoring the reactor Please select the best answer from the choices provided

Which of the following is not a trait of mangrove trees? a. They excrete salt through their leaves. b. They do not tolerate highly saline environments. c. They have two types of specialized roots. d. They absorb oxygen through their roots. Please select the best answer from the choices provided

Seafood Watch has made several unsustainable fishing practices illegal.

Which of the following best explains why soil conservation is important to human agriculture?a.Erosion prevention prevents millions of dollars in damage from mudslides.b.It is easier to prevent the degradation of old soil than it is to generate new soil.c.If the soil salinity gets too high crops will not be able to grow in it.d.Soil contamination is a hazard to human and animal health.

Which of the following statements about pesticides is true? a. Pesticides provide plants with essential nutrients. b. Pesticides prevent the destruction of crops. c. Pesticides are never harmful to plants. d. Pesticides are never harmful to animals. Please select the best answer from the choices provided

Moving up trophic levels there is an increase in energy, entropy, and biomass.

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

Which of the following is not a way in which wetlands filter water?a.nutrient absorptionb.oil absorptionc.sediment trappingd.bacterial absorption

Which of the following explains why energy use impacts quality of life?a.Increased energy use leads to increased economic activity.b.Decreased energy use leads to increased quality of life.c.All facets of a quality life are energy dependent.d.Energy use is unrelated to quality of life.