Microbes playing a role in nitrogen fixation in plants live in , while those playing a role in the digestive tract of certain herbivores live in . Microbes playing a role in nitrogen fixation in plants live in , while those playing a role in the digestive tract of certain herbivores live in . fortrans / rumens nodules / fortrans nodules / rumens rumens / nodules

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong