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.
As with most species, there is a social hierarchy within a group of whales; this social hierarchy is dominated by the females. Killer whales are the dominant predators in the ocean, and are opportunistic feeders; their diet varies from one region to another. They eat about 67% fish, 27% marine mammals, and 6% skid.Killer whales in the Bering Sea (near Alaska) eat 65% fish, 20% squid, and 15% marine mammals.hales eat 3% to 4% of their body weight in food per day. A baby whale eats up to 10% of its body weight during growth periods. Whales are like packs of wolves and lions; they often hunt in pods for food. They work together to encircle and herd the prey into small areas before attacking.