A dwarf is a person of short stature - under 4' 10 as an adult. More than 200 different conditions can cause dwarfism. A single type, called achondroplasia, causes about 70 percent of all dwarfism. Achondroplasia is a genetic condition that affects about 1 in 15,000 to 1 in 40,000 people. It makes your arms and legs short in comparison to your head and trunk.
Definition of NAPHTHALENE. : a crystalline aromatic hydrocarbon C10H8 usually obtained by distillation of coal tar and used especially in organic synthesis.See naphthalene defined for kids. a crystalline aromatic hydrocarbon C10H8 usually obtained by distillation of coal tar and used especially in organic synthesis. See naphthalene defined for kids.
Please refer to the Technical Fact Sheet for more information. What is naphthalene Naphthalene is made from crude oil or coal tar. It is also produced when things burn, so naphthalene is found in cigarette smoke, car exhaust, and smoke from forest fires.It is used as an insecticide and pest repellent.lease refer to the Technical Fact Sheet for more information. What is naphthalene Naphthalene is made from crude oil or coal tar. It is also produced when things burn, so naphthalene is found in cigarette smoke, car exhaust, and smoke from forest fires.