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.
Brass instruments do not get their name from being constructed of brass, but rather how the sound is produced. In these instruments, sound is forced through brass fixtures to create a unique sound. Tubas, trumpets, horns, and trombones are examples of brass instruments. It is important to note that saxophones are not, despite the fact that they are often made from brass, as they produce sound from a reed.