Geochemical Cycles

What role do decomposers play in the phosphorous cycle?

• absorb phosphorous 

• release phosphorous into atmosphere

• return phosphorous into the soil

• combustion

Tags

NGSS.MS-LS2-3

Which of the following statements is true of the phosphorus cycle?

• Phosphorus enters the atmosphere as phosphates.

• The phosphorus cycle utilizes the processes of erosion, and weathering.

• Phosphates are used in carbohydrate and glucose storage.

• The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.

Tags

NGSS.MS-LS2-3

What is the role of photosynthesis in the carbon cycle?

• It has no role in the carbon cycle

• It releases carbon dioxide into the atmosphere

• It converts carbon dioxide into glucose

• It only affects plant growth

Tags

NGSS.MS-LS1-6

What is the role of respiration in the carbon cycle?

• It has no role in the carbon cycle

• It releases carbon dioxide into the atmosphere

• It converts glucose into carbon dioxide

• It only affects animal growth

The diagram below shows a portion of the carbon cycle.

Select where photosynthesis takes place.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Nutrients move through an ecosystem in

• biogeochemical cycles

• water cycles

• energy pyramids

• ecological pyramids

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which biogeochemical cycle does NOT include a major path in which the substance cycles through the atmosphere?

• water cycle

• carbon cycle

• nitrogen cycle

• phosphorus cycle

Tags

NGSS.MS-ESS2-4

Which of the following is NOT true about matter in a biosphere?

• Matter is recycled in the biosphere

• Biogeochemical cycles transform and reuse molecules

• The total amount of matter decreases over time

• Water and nutrients pass between organisms and the environment.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary reservoir of carbon in the carbon cycle?

• Atmosphere

• Oceans

• Soil

• Fossil fuels

Which process in the nitrogen cycle involves the conversion of nitrogen gas into ammonia?

• Nitrification

• Denitrification

• Nitrogen fixation

• Ammonification