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.
But itâs not just the lemon fruit thatâs beneficial. When used as an essential oil, lemon oil can be applied topically, used for cleaning, and used for many other applications. Lemon essential oil, also known as Citrus limon oil, is extracted from lemon peels, which have many volatile oil glands in their pits.