In what ways can nitrogen gas be broken down into nutrients for plants

it can be done by oxidation and reduction.

Some nitrogen fixing bacterias are also responsible for converting atmospheric nitrogen into nitrates that plants can use (e.g ribozhium )

bacterias in the soil participate in nitrification as well, oxidizing ammonium ions into nitrates which plants can use.

Explanation:

Oxidation produces nitrate compounds

reduction produces ammoniacal compounds.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.