First, it is dark, meaning that it is not in the form of stars and planets that we see. Observations show that there is far too little visible matter in the Universe to make up the 27% required by the observations. Second, it is not in the form of dark clouds of normal matter, matter made up of particles called baryons.
Livestock[edit] The raising of livestock, sheep (the traditional mainstay for generations of Icelandic farmers) and cattle (the latter grew rapidly in the 20th century), is the main occupation, but pigs and poultry are also reared; Iceland is self-sufficient in the production of meat, dairy products and eggs.
Iceland is a small island nation just south of the Arctic Circle. Its clean mountain air and unpolluted soil and water produce healthy foods that are rated as some of the purest in the world. Icelandic farmers do not use pesticides or hormones, and many of the farm animals are free-range.inged sheepâs head and jam made from the sheepâs head, either fresh or pickled in whey, are traditional foods in Iceland. Many types of fish and seafood are abundant in Iceland, with haddock, carpelin, herring, cod, plaice, lobsters, clams and shrimp being some of the most common varieties eaten.