Use the diagram to answer the question.

Information
A diagram entitled Atmospheric Nitrogen (Upper N 2) shows an alfalfa plant. The alfalfa has leaves, a stem, and roots with nodules.

Question
A farmer plants alfalfa in a field to improve the soil.



How will the nodules on the alfalfa roots help improve the soil?

Answer options with 4 options
A.
The nodules store water that mixes with nitrates in the soil.

B.
The nodules store nitrogen gas until the plant needs it for photosynthesis.

C.
The nodules release ammonium from the plant metabolism back into the air.

D.
The nodules contain bacteria that convert nitrogen gas into other nitrogen compounds.

3 answers

D. The nodules contain bacteria that convert nitrogen gas into other nitrogen compounds.
What is the function of a nucleic acid?

Answer options with 4 options
A.
It insulates organisms and stores energy.

B.
It helps cells to catalyze chemical reactions.

C.
It is a source of short-term energy for the cell.

D.
It carries genetic information for building proteins.
D. It carries genetic information for building proteins.
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