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

Gas that makes up 78% of our atmosphere.

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

What is the formula for atmospheric nitrogen?

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

Plants and animals cannot use nitrogen directly from the air.

According to this diagram, plants use nitrogen to make _________________________

According to this diagram, plants absorb

According to this diagram, animals get proteins from eating ________________________

The process that allows organisms to use nitrogen

A correct path that nitrogen could take would be

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

Bacteria create a form of nitrogen that animals can use directly.

What do free living bacteria in the soil do?

In the nitrogen cycle, what does label A in the diagram represent?

All plants have nitrogen fixing bacteria in their roots.