The various compounds in the bodies of animals were earlier in there elemental form until becoming so complex. Life actually started with uni-cellular forms of organisms and with the changes in the environment the cellular proliferation took on toll and reached to such complex compounds such as proteins and then to RNA's and DNA's. The survival of fittest came into play in determining which organisms are going to survive in the biosphere.
Animals with external skeletons and jointed bodies and limbs are primarily found in the phylum Arthropoda. This diverse group includes insects, arachnids, crustaceans, and myriapods, all characterized by their exoskeleton made of chitin and segmented bodies. Their jointed appendages allow for a wide range of movement and adaptability in various environments.
No noble gas is found as a compound. They have to be forced into forming compounds, and some cannot even be made so then.
I'd say Oxygen.
Compound feed is food for domestic animals that is made from a variety of sources and contains other additives. It can be fed to animals using either a broiler or a layer feeder, by filling the feeder up with the compound feed.
chitin, also found in the ex-skeletons of arthropods, an organic nitrogenous compound
Coral islands.
Wool is spun from fleece, harvested from the bodies of animals that grow the fleece.
Water is the most abundant compound in living organisms. Some people get confused with carbon, but carbon is not a compound; it is an element. Human bodies are made up of 60%-70% water.
Vinegar is a compound. An element is anything found on the Periodic Table. A compound is anything made of more than one element.
No. Gears are found in man made machines, not bodies.
The most common compound found on Earth is water, which is made up of two hydrogen atoms and one oxygen atom.
A star can be made out of any compound found on Earth, but the most common is Hydrogen or Helium.