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.
Science vs Common Sense. Saxophones are mostly made from brass, which is an alloy mostly of copper and zinc. There are and have been slightly different combinations, and various other metals (e.g. lead) also included. Saxophones are also made from other materials, e.g. copper, bronze, silver and plastic. Various finishes are available: different types of lacquer and metal plating, e.g. silver, gold and nickel.