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Nutrient Cycles
Test Description: Carbon, Nitrogen, Phosphorus Cycles
Instructions: Answer all questions to get your test result.
1) Burning of fossil fuels has the greatest impact on the
A
rock cycle
B
nitrogen cycle
C
carbon cycle
D
phosphorus cycle
2) Carbon is removed from the atmosphere through
A
transpiration
B
respiration
C
photosynthesis
D
digestion
3) Which is the possible path of movement of nitrogen?
A
air-soil-plants-animals-soil-air
B
air-animals-soil-plants-air
C
soil-air-plants-air-animals-soil
D
soil-animals-plants-air-soil
4) Movement of nitrogen from the atmosphere to soil can be accomplished by
A
animal waste production
B
fossil fuel burning
C
nitrogen fixing bacteria
D
runoff from rocks
5) This process is responsible for excess nitrogen and phosphorus entering streams and oceans.
A
emission
B
runoff
C
decay
D
respiration
6) Which of the following is contributing to an overload of the carbon cycle?
A
respiration
B
deforestation
C
all of the above
D
photosynthesis
7) Which element below is contributing to the significant increase in global temperature
A
carbon
B
phosphporus
C
all of the above
D
nitrogen
8) The most abundant element in the atmosphere is
A
nitrogen
B
carbon
C
oxygen
D
phosphorus
9) Which of the following nutrients can be a limiting nutrient because it has to be removed from the atmosphere in placed into the soil by bacteria before plants can use it?
A
all of the above
B
carbon
C
nitrogen
D
phosphorus
10) Use of agricultural fertilizers adds excess _____ to ecosystems and can cause eutrophication of waters.
A
both phosphorus and nitrogen
B
nitrogen
C
phosphorus
D
carbon
*select an answer for all questions
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