The U curved is a head joint for the standard model flute that has been curved into a U shape so the instrument is more compact. This is so people with a small body frame can hold the instrument without having to reach beyond his or her capabilities.
Waders are a style of waterproof gear designed to allow people to stand in relatively deep water without getting wet. There are two basic styles, hip waders and chest waders, and when they are worn with a warm insulating layer, they can be extremely useful in cold, wet places. For some jobs, this gear may be required while at work, to ensure that employees are protected from the elements.
Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition. Like herbivores and predators, decomposers are heterotrophic, meaning that they use organic substrates to get their energy, carbon and nutrients for growth and development.