Oil and water separate because they have different densities.
A monomer is a <span>small molecule that comes together to make big macromolecule called polymer.The ribosomes make protien i think</span>
I would say presence of inorganic molecules I THINK not sure.
Answer: The DNA double helix is held together by two types of bonds,
covalent and hydrogen.
Explanation: Covalent bonds occur within each linear strand and strongly
bonds the bases, sugar and phosphate groups.
