Matter Cycling

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

How is nitrogen "fixed" into a usable form for plants?

• Through action of bacteria only

• Through lightning only

• Through action of bacteria and lightning

• Through photosynthesis

Tags

NGSS.MS-LS2-3

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

• nitrogen composition

• nitrogen fixation

• ammonia

• denitrification

Bacteria fix nitrogen from the atmosphere into a form plants can use.

• True

• False

Tags

NGSS.MS-LS2-3

Process where excess nutrients enter body of water causing overgrowth of aquatic plants and algae...

• Eutrophication

• Acid Precipitation

• Nitrogen Fixation

• Decomposition

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

How do plants get the nitrogen they need?

• from the air

• from the soil or water in which they live

• from the Sun

• from broken-down rocks

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

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

• bacteria

• plants

• animals

• producers

Tags

NGSS.MS-LS2-3

What happens when organisms die and decay? 

• Their bodies are lifted up

• Their nitrogen returns to the soil

• they keep their nitrogen

• They stay on earth forever

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

Which of the following best explains why nitrogen fixation (when bacteria in the soil change atmospheric nitrogen into nitrogen for plants & animals) must take place?

• Atmospheric nitrogen is unusable to plants and animals

• Nitrogen must be returned to the atmosphere

• Animals must breathe in nitrogen

• Nitrogen gets "stuck" in the soil and must be untrapped

Tags

NGSS.MS-LS2-3