Nutrient Cycling

True or False: Phosphorus cycles through the biosphere, geosphere, hydrosphere, and atmosphere.

• True

• False

Tags

SC.HS.8.3

How does phosphorus enter the biological part of the phosphorus cycle?

Tags

SC.HS.8.3

Which of the following statements is TRUE of the carbon cycle? MARK ALL THAT APPLY.

• This cycle does not have an atmospheric component.

• Includes the processes of photosynthesis, cellular respiration & combustion.

• The primary atmospheric gas in this cycle must be fixed into a form that organisms can use.

• Excess gases released by combustion put this cycle out of balance.

• Evaporation from the oceans is a critical component.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following statements is TRUE of the nitrogen cycle? MARK ALL THAT APPLY.

• This cycle does not have an atmospheric component.

• Includes the processes of photosynthesis, cellular respiration & combustion.

• The primary atmospheric gas in this cycle must be fixed into a form that organisms can use.

• Weathering of rocks is an important process in this cycle.

• Bacteria is a critical part of this cycle.

Tags

NGSS.MS-LS2-3

Which of the following statements is TRUE of the phosphorus cycle? MARK ALL THAT APPLY.

• This cycle does not have an atmospheric component.

• Includes the processes of photosynthesis, cellular respiration & combustion.

• The primary atmospheric gas in this cycle must be fixed into a form that organisms can use.

• Weathering of rocks is an important process in this cycle.

• Bacteria is a critical part of this cycle.

Tags

NGSS.MS-LS2-3

When humans introduce increasing amounts of atmospheric nitrogen to the biosphere, where does that nitrogen end up? MARK ALL THAT APPLY.

• It enters the atmosphere & increases global concentrations of N2 gas.

• It can form nitrous oxide, a green house gas.

• It fertilizes crop fields.

• It enters aquatic systems, stimulating plant & algae growth.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following best describes the importance of biogeochemical cycles?

• They show how certain elements and compounds move through the environment and are continually used and recycled.

• They explain how energy moves through trophic levels of an ecosystem.

• They describe how the adaptations of organisms change based on environmental pressures.

• They chart how biotic changes destroy unstable ecosystems.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a key process in the nitrogen cycle that converts nitrogen gas into a form usable by plants?

• Nitrogen fixation

• Photosynthesis

• Respiration

• Combustion

What role do decomposers play in the nutrient cycle?

• They fix atmospheric nitrogen

• They break down dead organisms, returning nutrients to the soil

• They convert solar energy into chemical energy

• They absorb carbon dioxide from the atmosphere

Tags

NGSS.MS-LS2-3

Which nutrient cycle is most directly affected by deforestation?

• Carbon cycle

• Nitrogen cycle

• Phosphorus cycle

• Water cycle

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4