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