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Biogeochemical Cycles
Test Description: This is a review of the biogeochemical cycles: carbon-oxygen, nitrogen and water.
Instructions: Answer all questions to get your test result.
1) The burning of fossil fuels has the greatest and most direct impact on the
A
carbon cycle
B
nitrogen cycle
C
water cycle
D
rock cycle
2) Carbon is used to make sugars (chemical energy) in which step of the carbon cycle?
A
respiration
B
photosythesis
C
transpiration
D
digestion
3) Carbon is removed from the atmosphere through what process?
A
burning fossil fuels
B
photosynthesis
C
respiration
D
deforestation
4) Where is carbon stored in the largest amounts on Earth?
A
ice caps
B
lithosphere
C
atmosphere
D
oceans
5) Which is the possible path of movement of nitorgen in the nitrogen cycle?
A
air -soil - plants - animals -soil - air
B
soil- air - plants- animals - soil
C
soil -animals - plants - air - soil
D
air -animals - soil - plants - air
6) What are the primary sources of energy that drive the movement of matter among resevoirs?
A
plants and animals
B
animal and solid Earth
C
solar and geothermal
D
the Sun and the plants
7) Of these factors, which is most directly responsible for the creation of fossil fuels?
A
pressure
B
tectonic activity (movement of the plates)
C
erosion
D
displacement
8) Movement of carbon from the lithosphere to the atmosphere can be accomplished by
A
photosynthesis
B
respiration
C
the burning of fossil fuels
D
all of the above
9) In which resevoir is dissolved carbon dioxide abundant?
A
plants
B
fossil fuels
C
oceans
D
organic waste
10) Most carbon is held in the lithosphere in which form?
A
carbon dioxide
B
carbon monoxide
C
methane
D
limestone
*select an answer for all questions
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