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.
These breeds are the Aberdeen-Angus, the Galloway, and the red polled Norfolk and Suffolk breed that is found in England. Polled cattle apparently existed in Scotland before recorded history because the likeness of such cattle is found in prehistoric carvings of Aberdeen and Angus.reeds of Livestock-Angus Cattle. In the northeastern part of Scotland lie the four counties of Aberdeen, Banff, Kincardine, and Angus. These counties touch the North Sea and all extend inland and have some high or mountainous country.