D is the correct answer. (Panting in a dogs increases the amount of cool air in nasal passages and lowers body temp).
D. all of the above
as they are all, evergreen, short and contain flammable oils
Gel electrophoresis is a technique used to separate DNA fragments according to their size. This is from Khan academy so I believe it is reliable.
Amino acids are the building blocks of proteins and are made from basic amino group (−NH2) and an acidic carboxyl group (−COOH) as well an organic R group (or side chain) that is unique to each amino acid. they are made from carbon, hydrogen, oxygen and nitrogen atoms
