3. Nucleic acids are made up of a sugar, a nitrogenous base, and a
group.
A. phosphate
B. cellulose
C. substrate

Your answer is A) phosphate.

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.

. the sierra madre fault zone of southern california

. the san andreas fault california