List the six nitrogen bases that would pair with the following sequence of bases in a strand of DNA: T C G A C A

A G C T G T

Explanation:

T matches with A and vice versa;

C matches with G and vice versa;

According to these rules:

T C G A C A

A G C T G T

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.