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Nutrient Cycles
Test Description: Water, Oxygen, Carbon, Nitrogen, and Phosphorus Cycles
Instructions: Answer all questions to get your test result.
1) What are the main processes of the water cycle?
A
Evaporation, Condensation, Precipitation
B
Erosion, Precipitation, Weathering
C
Precipitation, Condensation, Erosion
D
Weathering, Precipitation, Evaporation
2) What process removes carbon dioxide from the atmosphere?
A
Transpiration
B
Respiration
C
Photosynthesis
D
Evaporation
3) How does carbon dioxide get released into the atmosphere?
A
Erosion
B
Burning fossil fuels
C
Evaporation
D
Photosynthesis
4) Which element is the most abundant in the atmosphere, but it has to be
A
Phosphorus
B
Nitrogen
C
Carbon
D
Oxygen
5) What has to happen to nitrogen before it can be
A
Taken in by plants
B
Eaten by smaller animals
C
Bacteria must convert it
D
It has to go in to the soil
6) The erosion of rocks causes the release of what element?
A
Phosphorus
B
Oxygen
C
Carbon
D
Nitrogen
7) Fertilizers are rich in which two elements?
A
Carbon and Nitrogen
B
Oxygen and Phosphorus
C
Nitrogen and Phosphorus
D
Hydrogen and Carbon
8) The burning of fossil fuels is known as what?
A
Evaporation
B
Transpiration
C
Erosion
D
Combustion
9) How do humans alter the carbon cycle?
A
By planting too many trees
B
By burning fossil fuels
C
By using too much fertilizer
D
By breathing out carbon dioxide
10) How does deforestation affect the carbon cycle?
A
Trees release carbon dioxide, so there won't be enough carbon dioxide without trees
B
Cutting down trees causes carbon to enter the soil
C
Trees take in carbon dioxide through photosynthesis, so there will be too much carbon dioxide
D
Cutting down trees doesn't affect the carbon cycle
*select an answer for all questions
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