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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
digestion
B
respiration
C
photosynthesis
D
transpiration
3) Which is the possible path of movement of nitrogen?
A
air-animals-soil-plants-air
B
soil-animals-plants-air-soil
C
soil-air-plants-air-animals-soil
D
air-soil-plants-animals-soil-air
4) Movement of nitrogen from the atmosphere to soil can be accomplished by
A
nitrogen fixing bacteria
B
fossil fuel burning
C
runoff from rocks
D
animal waste production
5) This process is responsible for excess nitrogen and phosphorus entering streams and oceans.
A
emission
B
respiration
C
decay
D
runoff
6) Which of the following is contributing to an overload of the carbon cycle?
A
photosynthesis
B
all of the above
C
deforestation
D
respiration
7) Which element below is contributing to the significant increase in global temperature
A
all of the above
B
phosphporus
C
carbon
D
nitrogen
8) The most abundant element in the atmosphere is
A
phosphorus
B
oxygen
C
carbon
D
nitrogen
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
phosphorus
B
all of the above
C
nitrogen
D
carbon
10) Use of agricultural fertilizers adds excess _____ to ecosystems and can cause eutrophication of waters.
A
both phosphorus and nitrogen
B
phosphorus
C
carbon
D
nitrogen
*select an answer for all questions
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