The formula for this reaction would be
N + H3 ---> NH3
The first part of the reaction are the reactants and the second part is the product.
The reactants of this reaction are N and H3.
Or you could say the reactants are nitrogen and hydrogen
The ribosomes make the proteins in a cell.
Chromatin is remodeled and nucleosomes are repositioned, thereby making specific regions of the DNA available for transcription
Arthropods has the bilateral symmetry !
so answer is B !