<span>B. millions of years hope this helps</span>
The solar system is considered a natural system because it was made and controlled by natural forces, meaning, it was never influenced with human creations. It is considered as one of the products of the phenomenon of the physical world. Hope this answer helps you.
The answer is D. Just think how hard it would be to see a moth of that colour when just about everything during that time period is grey.
The ear has the tinest bones in the body. There are three bones in the ear. Hopes this helps you.
