Which pairing matches the type of substance with the item it donates? acid: electron pair; base: proton acid: electron pair; base: h+ ion acid: h+ ion; base: proton acid: proton; base: electron pair

materials water oxygen those are the things i can think of in this moment.

i'm sorry, but can you list the answers? i cannot with something i don't know the answers to

,

chris

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.