Unit Test — Unit test Answers

Most of the costs associated with using renewable resources are due to _______.a.overuse of resourcesb.atmospheric pollutionc.lack of availabilityd.global warming

Water would be considered a(n) _______. a. potential renewable resource b. potential nonrenewable resource c. actual renewable resource d. actual nonrenewable resource Please select the best answer from the choices provided

Nuclear fusion produces more energy than nuclear fission, but requires more initial energy.

Which of the following is a nonrenewable resource?a.geothermalb.solarc.nucleard.biomass

Which of the following statements about energy resource availability is true?a.Nonrenewable energy sources will be completely used within 10 years.b.Nonrenewable energy sources are readily available in all countries.c.The exact amount of nonrenewable energy resources is not currently known.d.All of the above are true.

Which of the following statements about energy and trophic levels is not true?a.The amount of available energy decreases at each higher trophic level.b.The energy conversion efficiency decreases at higher trophic levels.c.The net production of energy is higher at lower trophic levels.d.None of the above

Which of the following alternative energy technologies is most likely to be used to power a car?a.windb.geothermalc.biofueld.hydropower

What is the main reason that people are hesitant to use nuclear energy?a.It produces radioactive waste.b.It uses large amounts of water.c.The ore used for nuclear energy must be mined.d.It is more damaging to natural habitats than the use of coal.

Which of the following is required for photosynthesis to take place?a.sugarb.oxygenc.ATPd.water

Which of the following is true about the efficiency of energy transfer in an ecosystem?a.The more energy the organism requires, the more efficient the energy transfer.b.All energy transfers have the same efficiencies.c.The less energy the organism requires, the more efficient the energy transfer.d.The most efficient energy transfers are in large, warm-blooded animals.

Which of the following statements about C3 carbon fixation is true?a.C3 carbon fixation is an adaptation for plants exposed to high light intensity.b.C3 carbon fixation occurs in more plants than C4 carbon fixation.c.C3 carbon fixation is more common in areas of high temperatures than C4 carbon fixation.d.C3 carbon fixation occurs in the inner cells of a leaf rather than the entire leaf.

Which of the following organisms is located only in the 3rd trophic level of the soil food web?a.bacteriab.fungic.protozoad.nematodes

Which of the following best explains why ecosystems need a continual influx of new energy?a.Photosynthesis feeds herbivores, carnivores, and decomposers.b.As energy is recycled, a small amount is lost as heat.c.Energy flows through an ecosystem and cannot be recycled.d.Cellular respiration does not feed back into other processes.

The La Brea Tar Pits are _______.a.a valuable source of petroleumb.filled with tar made from mammalsc.filled with asphaltd.a and b only

Which of the following statements about biofuels is true?a.Biofuels are composed of 100% renewable materials.b.Algae is the leading source of biofuels.c.Energy processing from corn biofuels is not energy efficient.d.Corn is the only source of biofuels.