The Phosphorus Cycle

This is NOT a part of the phosphorus cycle.

• Phosphate is incorporated into sedimentary rocks

• Phosphate bound to soil

• Atmospheric phosphate

• Phosphate is absorbed from the soil by plants

Phosphorous is passed from plants to ____ who eat them

• plants
• animals
• scavengers

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_____ brings phosphorous into our waterways. .

• precipitation
• runoff
• transpiration
• condensation

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.

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What role do decomposers play in the phosphorous cycle?

• absorb phosphorous 
• release phosphorous into atmosphere
• return phosphorous into the soil
• combustion

This is released by the weathering of rocks.

• Carbon
• Oxygen
• Phosphorus
• Nitrogen

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Which nutrient is not cycled through the atmosphere and stays only on ground level?

• carbon
• nitrogen
• phosphorus
• water

Too much phosphorus in waterways (rivers, lakes) can lead to___________.

• eutrophication

• Nothing

• Death

• diseases

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An algal bloom is the rapid growth of a population of

• fungi

• protozoans

• algae

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In general, algal blooms occur when

• toxins accumulate in shellfish.

• nutrients decrease in the water.

• nutrients increase in the water.

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