Answer: D. a structure that provides a specific service within a cell
Explanation:
Dont know the first part but melanin quantities change the dkin color
Answer:
oceans is the answer that I got
<span>It is the valence orbit that controls the electrical properties of the atom. The valence electron is referred to as a "free electron.' Valence electrons have the highest energy of all electrons in an atom; they are also the most reactive, meaning they are usually the electrons involved in bonding. When silicon atoms combine to form a solid, they arrange themselves into an orderly pattern called a crystal.</span>
An alp-ha particle is equivalent to the nucleus of a helium atom. Helium Atom = Answer.
