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WorksheetsBiogeochemical Cycles
Total questions: 20
Worksheet time: 11mins
Why do living things need nitrogen?
To get energy
To make amino acids
To make proteins
To make proteins AND amino acids
What cycle are fossil fuels part of ?
carbon
oxygen
nitrogen
phosphorus
Where is the largest reservoir for the phosphorus cycle?
rocks and minerals
the ocean
the atmopshere
fossil fuels
What is the largest reservoir for nitrogen?
the ocean
rocks and minerals
the atmosphere
bacteria
What is the largest reservoir for water?
the ocean
rocks and minerals
the atmosphere
glaciers
A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?
volatilization
nitrogen fixation
runoff and leaching
ammonification
The carbon in coal, oil, and natural gas came from
the combustion of fossil fuels
the remains of dead organisms
carbon-fixing bacteria in swamp soil
carbon dioxide dissolved in ocean water
Nitrogen fixation is the process in which certain bacteria convert nitrogen gas into
liquid nitrogen
nitrates
nitrites
ammonia
Why do living things need nitrogen?
To get energy
To make amino acids
To make proteins
To make proteins AND amino acids
Plant roots directly obtain water from
Water vapor
Groundwater stored below the soil
Precipitation
Water runoff from rivers and streams
According to the diagram, geologic activity, such as volcanoes,
Increases the levels of CO2 in the atmosphere.
Decreases the levels of CO2 in the atmosphere.
Phosphorus is released from rock through ________
decomposition
evaporation
weathering
transpiration
