Hiya,
The answer is Solar Energy.
Hope this helps!
In chemistry, a valence electron<span> is an </span>electron<span> that is associated with an atom, and that can participate in the formation of a chemical bond; in a single covalent bond, both atoms in the bond contribute one </span>valence electron<span> in order to form a shared pair.</span>
<span>He is a carrier for color blindness and passes this Xc to his son</span>
