Answer "true" or "false" to the following statements:
1. The technique of extensional definition may be used to produce précising definitions.
2. The technique of extensional definition may be used to produce stipulative and lexical definitions.
3. Most extensional definitions convey the precise intensional meaning of a term.
4. An intensional definition conveys the meaning of a term by indicating the members of the class the term denotes.
5. In a synonymous definition the definiens must be a single word.
6. The technique of synonymous definition may be used to construct précising definitions.
7. Operational definitions typically convey the entire intensional meaning of a word.
8. The species is a subclass of the genus.
9. The specific difference is an attribute or set of attributes that identifies a species.
10. Definition by genus and difference may be used to produce stipulative, lexical, precising, theoretical, and persuasive definitions.