They are called <span>nucleotides. </span>
It would be the respiratory system
An embryonic stem cell is the first cell in the embryo, this is what creates a human and helps more cells to form.
The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
The answer is false. Cellular growth happens until the day of death.
