Answer:
That doesn't mean the energy is gone, it's just not where you are looking. The universe is defined as all energy and matter. It is everything. Closed system there is ...
Amount of wear, and how long they are may contribute with age and maybe even coloration and pigment.
Answer: increase in genetic variation
Explanation:
The various forms of a single gene that code for brown, blonde, or red hair are called genotype. For example, Bb and Dd.