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The raccoon ( / rəˈkuːn / or US: / ræˈkuːn / ⓘ, Procyon lotor ), also spelled racoon [3] and sometimes called the common raccoon or northern raccoon to distinguish it from the other species, is a mammal native to North America. It is the largest of the procyonid family, having a body length of 40 to 70 cm (16 to 28 in), and a body ...
The refractive index of water at 20 °C for visible light is 1.33. [1] The refractive index of normal ice is 1.31 (from List of refractive indices ). In general, an index of refraction is a complex number with real and imaginary parts, where the latter indicates the strength of absorption loss at a particular wavelength.
The Hunters in the Snow ( Dutch: Jagers in de Sneeuw ), also known as The Return of the Hunters, is a 1565 oil-on-wood painting by Pieter Bruegel the Elder. The Northern Renaissance work is one of a series of works, five of which still survive, that depict different times of the year. The painting is in the collection of the Kunsthistorisches ...
The wolf ( Canis lupus; [b] pl.: wolves ), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of Canis lupus have been recognized, including the dog and dingo, though gray wolves, as popularly understood, only comprise naturally-occurring wild subspecies.
Orca gladiator (Bonnaterre, 1789) The orca ( Orcinus orca ), or killer whale, is a toothed whale that is the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus. Orcas are recognizable by their black-and-white patterned body.
Bulk sodium is usually stored in oil or an inert gas. Sodium metal can be easily cut with a knife. It is a good conductor of electricity and heat. Due to having low atomic mass and large atomic radius, sodium is third-least dense of all elemental metals and is one of only three metals that can float on water, the other two being lithium and ...
Tardigrades (/ ˈ t ɑːr d ɪ ɡ r eɪ d z /), known colloquially as water bears or moss piglets, are a phylum of eight-legged segmented micro-animals. [2] [6] They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them Kleiner Wasserbär ( ' little water bear ' ). [7]
The Great Barrier Reef is the world's largest coral reef system, [1] [2] composed of over 2,900 individual reefs [3] and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). [4] [5] The reef is located in the Coral Sea, off the coast of Queensland, Australia ...