Geochemical Cycles

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water

• Atmosphere

• Sun

• Air

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

• ammonification

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis

•  decomposition and respiration

How nitrogen is "fixed" into useable form for plants

• only through action of bacteria

• only through lightning

• through action of bacteria & lightning

• through photosynthesis

Tags

NGSS.MS-LS2-3

How does the carbon in grass become part of a lion?

• The lion eats the grass

• Carbon from grass doesn't end up in a lion. 

• The carbon ends up in the lion's food chain. 

• The lion breathes in carbon given out by the plant

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which stage does the show in the diagram?

• condensation

• evaporation

• precipitation

• run off

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

what does the #4 show in the diagram?

• condensation

• evaporation

• precipitation

• run off

Tags

NGSS.MS-ESS2-4

How nitrogen is "fixed" into useable form for plants...

• through action of bacteria only

• through lightning only

• through action of bacteria & lightning

• through photosynthesis

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

• bacteria

• plants

• animals

• producers

Tags

NGSS.MS-LS2-3

Where are denitrifying bacteria found?

• In the soil

• Root nodules

• In dead things

• In the atmosphere