A: According to BBC, an endoskeleton is a bone structure located in the interior of an animal, and an exoskeleton is a bone structure located on the exterior of an animal. Each type of skeleton has unique advantages and disadvantages in helping the animal survive.
Minerals made of only one element are called NATIVE minerals (i.e., silver, gold, mercury, copper). Minerals composed of compounds are simply referred to as minerals (i.e., quartz, which is made up on silicon and oxygen).
Ore: Mineral compound that is mined for one of the elements it contains, usually a metal element. Rock: Naturally occurring solid mixture of minerals. Silicate: Mineral containing the elements silicon and oxygen, and usually other elements as well. Most minerals are compounds, meaning they contain two or more elements.re: Mineral compound that is mined for one of the elements it contains, usually a metal element. Rock: Naturally occurring solid mixture of minerals. Silicate: Mineral containing the elements silicon and oxygen, and usually other elements as well. Most minerals are compounds, meaning they contain two or more elements.