A layer of soil with characteristic properties
Answer:
Chemical made up from more than one type of element.
Answer: False. HIV cannot reproduce on its own.
Tropical rain forest biome :)
Explanation:
They are hydrophobic. About 5 amino acids have polar side chains, R-groups which do not ionize or become positively or negatively charged. These R-groups are neither strongly hydrophilic nor hydrophobic. Atoms in long molecules, such as polypeptides, are not rigidly fixed in space or position
