name first and last

How much of the atmosphere is composed of nitrogen gas?

• 87%
• 38%
• 78%
• 21%

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

• bacteria
• plants
• animals
• producers

Tags

NGSS.MS-LS2-3

Plants and animals cannot use nitrogen directly from the air.

• True
• False

Nitrification happens in the ______

• Air
• Soil
• Ground Water
• Plants

Tags

NGSS.MS-LS2-3

How do animals get the nitrogen they need?

• From the air they breathe
• From the water they drink
• From the food they eat
• From the sun

Tags

NGSS.MS-LS2-3

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

• Assimilation
• Fixation
• Ammonification
• Denitrification

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

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

This is released by the weathering of rocks.

• Carbon
• Oxygen
• Phosphorus
• Nitrogen

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3