Member FAQs. Questions and answers explain the structure, operation, Leadership, and Officers of the House of Representatives, the requirements for membership, the nomination and election process, and the roles and responsibilities of Members.
Types of teeth. 1  Incisors (eight in total): The middle four teeth on the upper and lower jaws. 2  Canines (four in total): The pointed teeth just outside the incisors. 3  Premolars (eight in total): Teeth between the canines and molars.  Molars (eight in total): Flat teeth in the rear of the mouth, best at grinding food.
Shark teeth are the most common type of fossil for a number of reasons. First, shark teeth, like most teeth, are made of dentin, a hard calcified tissue that does not easily decompose. Dentin is harder and denser than bone. In a tooth, the Dentin is surrounded by a very hard enamel shell. Secondly, to maintain a sharp smile, shark teeth are designed to regularly fall out and be replaced.