Kingdom

Kingdoms R. H. Whittaker recognized an additional kingdom for the Fungi. The resulting five-kingdom system, proposed in 1968, has become a popular standard and with some refinement is still used in many works, or forms the basis for newer multi-kingdom systems. It is based mainly on differences in nutrition; his Plantae were mostly multicellular autotrophs, his Animalia multicellular heterotrophs, and his Fungi multicellular saprotrophs. The remaining two kingdoms, Protista and Monera, included unicellular and simple cellular colonies.[

The Kingdom of 6 In the years around 1980 there was an emphasis on phylogeny and redefining the kingdoms to be monophyletic groups, groups made up of relatively closely related organisms. The Animalia, Plantae, and Fungi were generally reduced to core groups of closely related forms, and the others placed into the Protista. Based on RNA studies Carl Woese divided the prokaryotes (Kingdom Monera) into two kingdoms, called Eubacteria and Archaebacteria. Carl Woese attempted to establish a Three Primary Kingdom (or Urkingdom) system in which Plants, Animals, Protista, and Fungi were lumped into one primary kingdom of all eukaryotes. The Eubacteria and Archaebacteria made up the other two urkingdoms. The initial use of "six Kingdom systems" represents a blending of the classic Five Kingdom system and Woese's Three Kingdom system. Such six Kingdom systems have become standard in many works.[3]
A variety of new eukaryotic kingdoms were also proposed, but most were quickly invalidated, ranked down to phyla or classes, or abandoned. The only one which is still in common use is the kingdom Chromista proposed by Cavalier-Smith, including organisms such as kelp, diatoms, and water moulds. Thus the eukaryotes are divided into three primarily heterotrophic groups, the Animalia, Fungi, and Protozoa, and two primarily photosynthetic groups, the Plantae (including red and green algae) and Chromista. However, it has not become widely used because of uncertainty over the monophyly of the latter two kingdoms.
Woese stresses genetic similarity over outward appearances and behaviour, relying on comparisons of ribosomal RNA genes at the molecular level to sort out classification categories. A plant does not look like an animal, but at the cellular level, both groups are eukaryotes, having similar subcellular organization, including cell nuclei, which the Eubacteria and Archaebacteria do not have. More importantly, plants, animals, fungi, and protists are more similar to each other in their genetic makeup at the molecular level, based on RNA studies, than they are to either the Eubacteria or Archaebacteria. Woese also found that all of the eukaryotes, lumped together as one group, are more closely related, genetically, to the Archaebacteria than they are to the Eubacteria. This means that the Eubacteria and Archaebacteria are separate groups even when compared to the eukaryotes. So, Woese established the Three-domain system, clarifying that all the Eukaryotes are more closely genetically related compared to their genetic relationship to either the bacteria or the archaebacteria, without having to replace the "six kingdom systems" with a three kingdom system. The Three Domain system is a "six kingdom system" that unites the eukaryotic kingdoms into the Eukarya Domain based on their relative genetic similarity when compared to the Bacteria Domain and the Archaea Domain. Woese also recognized that the Protista Kingdom is not a monophyletic group and might be further divided at the level of Kingdom. Others have divided the Protista Kingdom into the Protozoa and the Chromista, for instance.

Archery

Archery is the practice of using a bow or crossbow to shoot arrows. Archery has historically been used in hunting and combat and has become a precision sport. A person practicing archery is called an archer, and one who is fond of or an expert at archery is sometimes called a toxophilite.

History The bow seems to have been invented in the late Paleolithic or early Mesolithic. The oldest indication for its use in Europe comes from the Stellmoor in the Ahrensburg valley north of Hamburg, Germany and date from the late Paleolithic Hamburgian culture (9000-8000 BC). The arrows were made of pine and consisted of a mainshaft and a 15-20 centimetre (6-8 inches) long foreshaft with a flint point. There are no definite earlier bows; previous pointed shafts are known, but may have been launched by atlatls rather than bows. The oldest bows known so far come from the Holmegård swamp in Denmark. Bows eventually replaced the atlatl as the predominant means for launching shafted projectiles, on every continent except Australia.
Bows and arrows have been present in Egyptian culture since its predynastic origins. In the Levant, artifacts which may be arrow-shaft straighteners are known from the Natufian culture, (ca. 12.800-10.300 BP) onwards. The Khiamian and PPN A shouldered Khiam-points may well be arrowheads.
Classical civilizations, notably the Persians, Parthians, Indians, Koreans, Chinese, and Japanese fielded large numbers of archers in their armies. The Sanskrit term for archery, dhanurveda, came to refer to martial arts in general.
Archery was highly developed in Asia and in the Islamic world. In East Asia the ancient Korean civilizations were well-known for their archery skills.[1] Central Asian and American Plains tribesmen were extremely adept at archery on horseback.

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