What is life? ? what is it? it real it? or are we just made up beings, a product of some greater species and we are being watched an
just pieces in a controlled

in a word, a scientific question is testable. a testable question is one that asks about objects, organisms or events found in the world around it

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.