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).
We know that bauxite is a mineral, and it is the principle ore of aluminum. Bauxite is a mixture, and as such, it has no specific chemical formula.It is, however, composed ma â¦ inly of three minerals, each of which is a compound of aluminum. These minerals are gibbsite Al(OH)3, boehmite Î³-AlO(OH), and diaspore Î±-AlO(OH). + 15 others found this useful. Greg McLucas.1  The Periodic Table of Elements Life is sustained by a number of chemical elements.t is, however, composed ma â¦ inly of three minerals, each of which is a compound of aluminum. These minerals are gibbsite Al(OH)3, boehmite Î³-AlO(OH), and diaspore Î±-AlO(OH). + 15 others found this useful. Greg McLucas. 1  The Periodic Table of Elements Life is sustained by a number of chemical elements.