The answer to your question is,
Nail polish consists of a film-forming polymer dissolved in a volatile organic solvent. Nitrocellulose that is dissolved in butyl acetate or ethyl acetate is common. This basic formulation is expanded to include the following: Plasticizers to yield non-brittle films.
-Mabel <3
Olfactory sensory neurons in the epithelium detect odor molecules dissolved in the mucus and transmit information about the odor to the brain in a process called sensory transduction
Social milestone is when a child interacts with others, which includes responding using body language. For example, when an adult waves at the child, then the child waves back at him/her or when you smile and the child smiles back. The answer is - the child shows understanding by responsive body language.
