AnswersOH-Environmental Science CRUnit Test

Unit Test — Unit test Answers

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1
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Most of the costs associated with using renewable resources are due to _______.

A
overuse of resources
B
atmospheric pollution
C
lack of availability
D
global warming
2
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Water would be considered a(n) _______.

A
potential renewable resource
B
potential nonrenewable resource
C
actual renewable resource
D
actual nonrenewable resource
3

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

A
T
B
F
4

Which of the following is a nonrenewable resource?

A
geothermal
B
solar
C
nuclear
D
biomass
5

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.
6

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
7

Which of the following alternative energy technologies is most likely to be used to power a car?

A
wind
B
geothermal
C
biofuel
D
hydropower
8

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.
9

Which of the following is required for photosynthesis to take place?

A
sugar
B
oxygen
C
ATP
D
water
10

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.
11

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.
12

Which of the following organisms is located only in the 3rd trophic level of the soil food web?

A
bacteria
B
fungi
C
protozoa
D
nematodes
13

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.
14

The La Brea Tar Pits are _______.

A
a valuable source of petroleum
B
filled with tar made from mammals
C
filled with asphalt
D
a and b only
15

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.

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