Nitration of an aromatic ring involves an electrophilic substitution reaction. draw the structure of the electrophile that is attacked by the aromatic ring and the intermediate formed after attachment of the electrophile to the ring. be sure to show formal charges.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

a sonic boom is a loud boom that breaks the sound barrier

explanation:

elctricity and magnet is conversion to it