The U.S. tax system, which the IRS oversees and administers, is based on the principle of voluntary compliance. Duties and Powers. The IRS is responsible for enforcing the Internal Revenue Code (U.S.C.A. tit. 26), which codifies all U.S. tax laws.
Baleen: Also known as whalebone, baleen is a filter-feeder system inside the mouths of whales in the Mysticeti suborder. Plates of keratin grow from the gums of the upper jaw. When the whales feed, they take in large amounts of food-rich water and then use baleen to filter out the water while retaining krill.ifferent species of whales vary drastically in terms of both size and weight. Baleen whales in the Mysticeti suborder are generally larger than those of the Odontoceti suborder. The Mysticeti group includes the blue whale (Balaenoptera musculus)âthe largest animal ever to live on the planet.
Baleen is a filter-feeder system inside the mouths of baleen whales. The baleen system works when a whale opens its mouth underwater and the whale takes in water. The whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as food source for the whale.Baleen is similar to bristles and is made of keratin, the same substance found in human fingernails and hair. Some whales, such as the bowhead whale, have longer baleen than others.Other whales, such as the gray whale, only use one side of their baleen.he whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as food source for the whale. Baleen is similar to bristles and is made of keratin, the same substance found in human fingernails and hair.