Scientific laws do not explain why something occurs or exists or what causes it
The answer is ribosomes. Ribosomes produce proteins for the cell.
Answer:
Elements are made up of only one type of atom.
Each element has a unique chemical symbol.
Elements can be identified by their atomic number.
The most appropriate unit for describing a 26 mile marathon run would be C. Kilometre. As kilometres can be easily utilized and converted to miles and vice-versa.