Oak vs Saratov

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An oak is a tree or shrub in the genus Quercus (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably Lithocarpus (stone oaks), as well as in those of unrelated species such as Grevillea robusta (silky oaks) and the Casuarinaceae (she-oaks). The genus Quercus is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in the Americas, Asia, Europe, and North Africa. North America contains the largest number of oak species, with approximately 90 occurring in the United States, while Mexico has 160 species of which 109 are endemic. The second greatest center of oak diversity is China, which contains approximately 100 species.

Oaks have spirally arranged leaves, with lobate margins in many species; some have serrated leaves or entire leaves with smooth margins. Many deciduous species are marcescent, not dropping dead leaves until spring. In spring, a single oak tree produces both male flowers (in the form of catkins) and small female flowers, meaning that the trees are monoecious. The fruit is a nut called an acorn or oak nut borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on their species. The acorns and leaves contain tannic acid, which helps to guard from fungi and insects. The live oaks are distinguished for being evergreen, but are not actually a distinct group and instead are dispersed across the genus.

Source: Wikipedia

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Saratov (UK: , US: ; Russian: Сара́тов, IPA: [sɐˈratəf] (listen)) is the largest city and administrative center of Saratov Oblast, Russia, and a major port on the Volga River located upstream (north) of Volgograd. As of the 2010 Census, Saratov had a population of 837,900, making it the 17th largest city in Russia by population. Saratov is 389 km from Volgograd, 442 km from Samara, and 858 km to the south-east of Moscow. The city stands near the site of Uvek, a city of the Golden Horde. The Tsar Feodor I of Russia likely developed Saratov as a fortress to secure Russia's southeastern border.

Saratov developed as a shipping port along the Volga, and it was historically important to the Volga Germans, who settled in large numbers in the city, before they were expelled after World War II. Saratov is home to a number of cultural and educational institutions, including the Saratov Drama Theater, Saratov Conservatory, Radishchev Art Museum, Saratov State Technical University, and Saratov State University.

Source: Wikipedia