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.
Fish. 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. Fish is traditionally served boiled and accompanied by potatoes.Fish is often preserved by salting, smoking or drying.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.