A type of matter made up of a combination of elements is called a compound. for example table salt, is made up of two elements that by themselves are lethal but chemically combined cancel each other out there for becoming edible.
If its asking the distance for the 65 db then use a proportion, if otherwise pleas clarify. It sounds like a pretty juicy conversation.
A sphere has reflection symmetry across any plane through its center.
Hi,
The answer is D, Gravitational.
Hope this helps.
r3t40
