Nitrogen

True or False...Bacteria play a very important role in the nitrogen cycle.

• True

• False

True or False...Decomposers (like fungi & bacteria) are important in cycling nitrogen through the ecosystem.

• True

• False

Tags

NGSS.MS-LS2-3

What percent of the atmosphere is composed of nitrogen?

• 1%

• 21%

• 78%

• 100%

The process of bacteria in the soil changing extra nitrates back into atmospheric nitrogen so that it can reenter the atmosphere & continue the cycle is known as _____.

• ammonification

• nitrification

• fixation

• denitrification

Tags

NGSS.MS-LS2-3

True or False...The nitrogen in the atmosphere is in a usable form and can be absorbed by living things.

• True

• False

Tags

NGSS.MS-LS2-3

True or False...There is not much nitrogen in the atmosphere.

• True

• False

The process of plants absorbing usable nitrates from the soil with their roots is known as ____.

• nitrification

• assimilation

• fixation

• denitrification

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Nitrogen is an important building block of _____ for living things.

• water

• proteins

• food

• energy

Tags

NGSS.MS-LS3-1

How do nitrates that are absorbed by plants get into the bodies of animals?

• through the food web

• through the atmosphere

• from the soil

• precipitation

Tags

NGSS.MS-LS2-3

The process of decomposers like fungi & bacteria breaking down dead organic matter & waste material and turning nitrogen into ammonia is known as ____.

• ammonification

• nitrification

• fixation

• denitrification

Tags

NGSS.MS-LS2-3