In 2008, biochemist Boris Arkadievich Malyarchuk (Russian: ) et al. of the Institute of Biological Problems of the North, Russian Academy of Sciences, Magadan, Russia, used a sample (n=279) of Czech individuals to determine the frequency of "Mongoloid" "mtDNA lineages". Malyarchuk found Czech mtDNA lineages were typical of "Slavic populations" with "1.8%" Mongoloid mtDNA lineage. Malyarchuk added that "Slavic populations" "almost always" contain Mongoloid mtDNA lineage. Malyarchuk said the Mongoloid component of Slavic people was partially added before the split of "Balto-Slavics" in 2,0003,000 BC with additional Mongoloid mixture occurring among Slavics in the last 4,000 years. Malyarchuk said the "Russian population" was developed by the "assimilation of the indigenous pre-Slavic population of Eastern Europe by true Slavs" with additional "assimilation of Finno-Ugric populations" and "long-lasting" interactions with the populations of "Siberia" and "Central Asia". Malyarchuk said that other Slavs "Mongoloid component" was increased during the waves of migration from "steppe populations (Huns, Avars, Bulgars and Mongols)", especially the decay of the "Avar Khaganate".
When did Boris Arkadievich Malyarchuk use a sample of Czech individuals to determine the frequency of "Monigoloid" "mtDNA lineages"?
2008

Niels Bohr introduced the first quantized model of the atom in 1913, in an attempt to overcome a major shortcoming of Rutherford's classical model. In classical electrodynamics, a charge moving in a circle should radiate electromagnetic radiation. If that charge were to be an electron orbiting a nucleus, the radiation would cause it to lose energy and spiral down into the nucleus. Bohr solved this paradox with explicit reference to Planck's work: an electron in a Bohr atom could only have certain defined energies En
In classical electrodynamics, a charge moving in a circle should do what?
radiate electromagnetic radiation

The state has a great diversity due to the large number of microclimates found and dramatic varying terrain. The flora throughout the Sierra Madre Occidental mountain range varies with elevation. Pine (Pinus) and oak (Quercus) species are usually found at an elevation of 2,000 m (6,560 ft) above sea level. The most common species of flora found in the mountains are: Pinus, Quercus, Abies, Ficus, Vachellia, Ipomoea, Acacia, Lysiloma, Bursera, Vitex, Tabebuia, Sideroxylon, Cordia, Fouquieria, Pithecellobium. The state is home to one of the largest variation species of the genus Pinus in the world. The lower elevations have a steppe vegetation with a variety of grasses and small bushes. Several species of Juniperus dot the steppe and the transition zone.
The state has great diversity thanks to the large number of what?
microclimates