Exoskeleton is the outer protective coat for some animals and  mammals. Advantages of exoskeleton include the safety to animal,  and ability to live on a variety of surfaces â¦ .The disadvantage  includes the restriction of growth and size.xoskeleton is the outer protective coat for some animals and  mammals. Advantages of exoskeleton include the safety to animal,  and ability to live on a variety of surfaces â¦ .
1 Volatile oils that dry out are generally more harmful to your health. 2  Mineral oil does not give off harmful vapour. 3  Water is used as a cutting fluid in some stones, but it dries even over short sessions, does not seem to lift filings as well as mineral oil, and remains on the tool after honing.
Neatsfoot oil is a well renowned oil product for leather polish. In past times, this oil was also used for treating dry skin. There are many varieties of neatsfoot oil. It is actually a thick oil which comes from the bones of cattle. That is why it is called neatsfoot oil, as neat is an old word for cattle. This name for cattle has gone obsolete, but the name survives in the oil.