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.
Eucalyptus Oil. Eucalyptus oil is a wonderful essential oil which comes from the Eucalyptus tree. It has a strong, pleasing aroma, very refreshing but somewhat medicinal as well. Eucalyptus oil can be used for a variety of purposes in your home, when you are going outside and for many personal health problems.