Ecology/ Nutrient Cycling Exam

_____ brings phosphorous into our waterways. .

• Precipitation

• Runoff

• Transpiration

• Condensation

Tags

NGSS.MS-LS2-3

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

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

• eutrophication

• nothing

• decreased pH levels

• diseases

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

The major sink for phosphorus is

• sedimentary rock

• atmospheric gases

• seawater

• plants

Tags

NGSS.MS-LS2-3

This is released by the weathering of rocks.

• Carbon
• Oxygen
• Phosphorus
• Nitrogen

In general, algal blooms occur when

• toxins accumulate in shellfish.

• nutrients decrease in the water.

• nutrients increase in the water.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which is a Human impact on the carbon cycle?

• decreasing atmospheric carbon through fossil fuel combustion

• lightning causing forest fires increasing atmospheric carbon

• harvesting timber (deforestation)

Tags

NGSS.MS-ESS3-4

Which process is a significant part of the carbon cycle?

• erosion

• evaporation

• transpiration

• photosynthesis

Tags

NGSS.MS-LS1-6

How does deforestation (cutting down trees) affect the carbon cycle?

• increase level of oxygen

• increase level of carbon dioxide

• increase level of oxygen and carbon dioxide

• it does not affect the carbon cycle

Tags

NGSS.MS-ESS3-4

Nitrogen stays in the same form throughout its whole biogeochemical cycle

• TRUE

• FALSE

Tags

NGSS.MS-LS2-3