The difference between essential and non-essential amino acids is that:
essential amino acids contain protein, and non-essential ones don't.
essential amino acids break down into sugar, while non-essential amino acids break down into lipids.
non-essential amino acids are produced by the body, while the body cannot produce essential amino acids on its own.
All of these choices are correct.

so easy. just google the electromagnetic waves and it’ll pop up.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

i already answered it by 34/s

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;