Ovarian failure: Ovarian failure causes elevated fsh and lh, ovarian falure is mostly due to genetic or immune causes - although we do not know or understand all the possible reasons. ... Read more Dr. Gerard Honore Dr. Honore
Raw Materials. Pipe organs are primarily made of wood and metal. Wood used to make parts of the organ which are not visible, such as the action, may be made of plywood or soft woods such as poplar. Visible wooden parts, such as the console, are made from hard, decorative woods, such as mahogany or oak.
Some modern flutes are made from wood that produces a different sound from metal flutes. These wooden flutes generally have metal keys and mechanisms. Most flutes are made of metal. Less expensive flutes, intended for students, may be made from alloys of nickel and other metals.