Cytoplasm. I hate this minimum 20 character limit.
Aside from its nitrogen bases, all nucleotides are similar. The bases will either be adenine, cytosine, guanine, uracil, or thymine.
The thick layer of earth's surface is called the mantle.
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force.
