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33-504: During the initial settlement around the Mühlendamm causeway across the Spree river about 1200 AD, the site developed as the central trading place. In the late 13th century, however, the venue became too small and a new marketplace beneath St. Mary's Church arose, which soon became more popular. The former site was thereafter known as Olde Markt or Alter Markt (Old Market) until 1685, when it

66-656: A depth of 10,000 m (33,000 ft; 6.2 mi) in the Mariana Trench , the deepest spot in the Earth's oceans. In fact, single-celled life forms have been found in the deepest part of the Mariana Trench, by the Challenger Deep , at depths of 11,034 m (36,201 ft; 6.856 mi). Other researchers reported related studies that microorganisms thrive inside rocks up to 580 m (1,900 ft; 0.36 mi) below

99-409: A general sense, biospheres are any closed, self-regulating systems containing ecosystems. This includes artificial biospheres such as Biosphere 2 and BIOS-3 , and potentially ones on other planets or moons . The term "biosphere" was coined in 1875 by geologist Eduard Suess , who defined it as the place on Earth's surface where life dwells. While the concept has a geological origin, it

132-408: A native Martian biosphere—as part of the topic of biospherics. Currently, the total number of living cells on the Earth is estimated to be 10 ; the total number since the beginning of Earth, as 10 , and the total number for the entire time of a habitable planet Earth as 10 . This is much larger than the total number of estimated stars (and Earth-like planets) in the observable universe as 10 ,

165-860: A number which is more than all the grains of beach sand on planet Earth; but less than the total number of atoms estimated in the observable universe as 10 ; and the estimated total number of stars in an inflationary universe (observed and unobserved), as 10 . The earliest evidence for life on Earth includes biogenic graphite found in 3.7 billion-year-old metasedimentary rocks from Western Greenland and microbial mat fossils found in 3.48 billion-year-old sandstone from Western Australia . More recently, in 2015, "remains of biotic life " were found in 4.1 billion-year-old rocks in Western Australia. In 2017, putative fossilized microorganisms (or microfossils ) were announced to have been discovered in hydrothermal vent precipitates in

198-619: A stretch of about 20 kilometres (12 mi) east of and flowing through Fürstenwalde, the river forms part of the Oder-Spree Canal . On this reach, and on the reach west of the confluence with the River Dahme at Köpenick, the river forms part of secondary commercial link between Berlin and the River Oder and hence Poland . The canal diverges from the Spree just east of Fürstenwalde and later joins

231-767: Is a river in Germany and the Czech Republic . With a length of approximately 400 kilometres (250 mi), it is the main tributary of the Havel River. The Spree is much longer than the Havel, which it flows into at Berlin - Spandau ; the Havel then flows into the Elbe at Havelberg . The river rises in the Lusatian Highlands , in the Lusatian part of Saxony , where it has three sources:

264-643: Is an indication of the effect of both Charles Darwin and Matthew F. Maury on the Earth sciences . The biosphere's ecological context comes from the 1920s (see Vladimir I. Vernadsky ), preceding the 1935 introduction of the term " ecosystem " by Sir Arthur Tansley (see ecology history ). Vernadsky defined ecology as the science of the biosphere. It is an interdisciplinary concept for integrating astronomy , geophysics , meteorology , biogeography , evolution , geology , geochemistry , hydrology and, generally speaking, all life and Earth sciences. Geochemists define

297-561: Is an island in the Spree. In 2004 the Badeschiff floating swimming pool opened on the Spree in Berlin. Small craft, such as punts , are widely used in wetlands of the Spreewald. Larger craft can reach as far upstream as Leibsch, although the upper reaches are relatively shallow and are generally only used by leisure craft. Some intermediate reaches are unnavigable and by-passed by canals. For

330-775: Is the main river of Berlin, Brandenburg, Lusatia, and the settlement area of the Sorbs , who call the river Sprjewja ; the name derives ultimately from Proto-Germanic * spreutaną "to spring forth". For a very short distance close to its sources, the Spree constitutes, as Spréva , the border between Germany and the Czech Republic . The Spree's longest tributaries are Dahme (confluence in Berlin- Köpenick ) and Schwarzer Schöps ( Čorny Šepc ; confluence in Boxberg/O.L. - Sprey  [ de ] ), other well-known tributaries (since they are Berlin rivers) are Panke and Wuhle . It rises in

363-417: Is the worldwide sum of all ecosystems . It can also be termed the zone of life on Earth . The biosphere (which is technically a spherical shell ) is virtually a closed system with regard to matter , with minimal inputs and outputs. Regarding energy , it is an open system, with photosynthesis capturing solar energy at a rate of around 100 terawatts . By the most general biophysiological definition,

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396-644: The Lusatian Mountains and flows north through Bautzen and Spremberg . In the Spreewald the river passes through the towns of Lübbenau , Lübben and Leibsch . Just below Leibsch, the Dahme Flood Relief Canal diverts water from the Spree to run into the River Dahme at Märkisch Buchholz . The Spree continues north from Leibsch before flowing into the Neuendorfer See at the northern edge of

429-615: The Nazi authorities had cleared many buildings in preparation of their Welthauptstadt Germania plans, with the intention of creating an administrative Gauforum around the Altes Stadthaus, which was originally separated from the square by several residential buildings along Jüdenstraße . In 1959, under the East German rule, the broad Grunerstraße was relocated, running through the square to Alexanderplatz . Recent urban plans developed by

462-485: The Nuvvuagittuq Belt of Quebec, Canada that were as old as 4.28 billion years, the oldest record of life on earth, suggesting "an almost instantaneous emergence of life" after ocean formation 4.4 billion years ago , and not long after the formation of the Earth 4.54 billion years ago. According to biologist Stephen Blair Hedges , "If life arose relatively quickly on Earth ... then it could be common in

495-820: The Senate of Berlin envisage a complete redesign of the location according to its historic condition, including narrower streets and new built-up areas on the available spaces. [REDACTED] Media related to Molkenmarkt (Berlin-Mitte) at Wikimedia Commons 52°31′00″N 13°24′36″E  /  52.51667°N 13.41000°E  / 52.51667; 13.41000 Spree (river) The Spree ( / ʃ p r eɪ , s p r eɪ / S(H)PRAY , German: [ʃpʁeː] ; Sorbian languages : Sprjewja , Lower Sorbian: [ˈsprʲɛwʲa] , Upper Sorbian: [ˈspʁʲɛwʲa] ; Czech : Spréva [ˈsprɛːva] ; in Lower Sorbian also called Rěka )

528-404: The universe ." Every part of the planet, from the polar ice caps to the equator , features life of some kind. Recent advances in microbiology have demonstrated that microbes live deep beneath the Earth's terrestrial surface and that the total mass of microbial life in so-called "uninhabitable zones" may, in biomass , exceed all animal and plant life on the surface. The actual thickness of

561-406: The Earth's biosphere, including soil , hot springs , inside rocks at least 19 km (12 mi) deep underground, and at least 64 km (40 mi) high in the atmosphere. Marine life under many forms has been found in the deepest reaches of the world ocean while much of the deep sea remains to be explored. Under certain test conditions, microorganisms have been observed to survive

594-470: The Earth's crust. The rate at which the temperature increases depends on many factors, including the type of crust (continental vs. oceanic), rock type, geographic location, etc. The greatest known temperature at which microbial life can exist is 122 °C (252 °F) ( Methanopyrus kandleri Strain 116). It is likely that the limit of life in the " deep biosphere " is defined by temperature rather than absolute depth. On 20 August 2014, scientists confirmed

627-437: The River Dahme at the (lake) Seddinsee . In Berlin, the Spree forms part of a dense network of navigable waterways, many of which are artificial, and which provide a wide choice of routes. Several important commercial harbors can be found on this network, and tugs and barges move sand, grain, bricks, and beer. Tour boats tour the central section of the Spree and its adjoining waterways on a frequent basis. Many people died in

660-599: The Spree during the Cold War while trying to cross the Berlin Wall , including children who drowned when rescuers were not allowed to enter the river to save them. Biosphere The biosphere (from Ancient Greek βίος ( bíos )  'life' and σφαῖρα ( sphaîra )  'sphere'), also called the ecosphere (from Ancient Greek οἶκος ( oîkos )  'settlement, house' and σφαῖρα ( sphaîra )  'sphere'),

693-809: The Spree is where it is best known. It flows through the city centre of Berlin to join the River Havel in Spandau , one of Berlin's western boroughs, which itself ultimately merges with the Elbe to enter the sea in Cuxhaven , after flowing through Hamburg . On its route through Berlin, the river passes Berlin Cathedral ( Berliner Dom ), the Reichstag and the Schloss Charlottenburg . The renowned Museum Island ( Museumsinsel ), with its collection of five major museums ,

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726-572: The Spreewald. From the Neundorfer See it then flows in an easterly direction to the Schwielochsee , and then in a northerly and westerly direction to the town of Fürstenwalde . From Fürstenwalde the river continues to flow westwards, through the Dämeritzsee and Müggelsee , to Köpenick in the southeastern part of Berlin , where it is joined by its tributary, the River Dahme. The final reach of

759-406: The biosphere as being the total sum of living organisms (the " biomass " or " biota " as referred to by biologists and ecologists). In this sense, the biosphere is but one of four separate components of the geochemical model, the other three being geosphere , hydrosphere , and atmosphere . When these four component spheres are combined into one system, it is known as the ecosphere . This term

792-491: The biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere , cryosphere , hydrosphere , and atmosphere . The biosphere is postulated to have evolved , beginning with a process of biopoiesis (life created naturally from non-living matter, such as simple organic compounds) or biogenesis (life created from living matter), at least some 3.5 billion years ago. In

825-835: The biosphere on Earth is difficult to measure. Birds typically fly at altitudes as high as 1,800 m (5,900 ft; 1.1 mi) and fish live as much as 8,372 m (27,467 ft; 5.202 mi) underwater in the Puerto Rico Trench . There are more extreme examples for life on the planet: Rüppell's vulture has been found at altitudes of 11,300 metres (37,100 feet; 7.0 miles); bar-headed geese migrate at altitudes of at least 8,300 m (27,200 ft; 5.2 mi); yaks live at elevations as high as 5,400 m (17,700 ft; 3.4 mi) above sea level; mountain goats live up to 3,050 m (10,010 ft; 1.90 mi). Herbivorous animals at these elevations depend on lichens, grasses, and herbs. Life forms live in every part of

858-460: The existence of microorganisms living 800 m (2,600 ft; 0.50 mi) below the ice of Antarctica . Earth's biosphere is divided into several biomes , inhabited by fairly similar flora and fauna . On land, biomes are separated primarily by latitude . Terrestrial biomes lying within the Arctic and Antarctic Circles are relatively barren of plant and animal life. In contrast, most of

891-771: The historical one called Spreeborn in the village of Spreedorf  [ de ] , the water-richest one in Neugersdorf , and the highest elevated one in Eibau . The Spree then flows northwards through Upper and Lower Lusatia , where it crosses the border between Saxony and Brandenburg . After passing through Cottbus , it forms the Spree Forest ( German : Spreewald ), a large inland delta and biosphere reserve. It then flows through Lake Schwielochsee before entering Berlin, as Müggelspree  [ de ] ( pronounced [ˈmʏɡl̩ˌʃpʁeː] ). The Spree

924-524: The more populous biomes lie near the equator . Experimental biospheres, also called closed ecological systems , have been created to study ecosystems and the potential for supporting life outside the Earth. These include spacecraft and the following terrestrial laboratories: No biospheres have been detected beyond the Earth; therefore, the existence of extraterrestrial biospheres remains hypothetical. The rare Earth hypothesis suggests they should be very rare, save ones composed of microbial life only. On

957-562: The other hand, Earth analogs may be quite numerous, at least in the Milky Way galaxy , given the large number of planets. Three of the planets discovered orbiting TRAPPIST-1 could possibly contain biospheres. Given limited understanding of abiogenesis , it is currently unknown what percentage of these planets actually develop biospheres. Based on observations by the Kepler Space Telescope team, it has been calculated that provided

990-523: The sea floor under 2,590 m (8,500 ft; 1.61 mi) of ocean off the coast of the northwestern United States , as well as 2,400 m (7,900 ft; 1.5 mi) beneath the seabed off Japan. Culturable thermophilic microbes have been extracted from cores drilled more than 5,000 m (16,000 ft; 3.1 mi) into the Earth's crust in Sweden , from rocks between 65–75 °C (149–167 °F). Temperature increases with increasing depth into

1023-449: The vacuum of outer space . The total amount of soil and subsurface bacterial carbon is estimated as 5 × 10  g. The mass of prokaryote microorganisms—which includes bacteria and archaea, but not the nucleated eukaryote microorganisms —may be as much as 0.8 trillion tons of carbon (of the total biosphere mass , estimated at between 1 and 4 trillion tons). Barophilic marine microbes have been found at more than

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1056-408: Was coined during the 1960s and encompasses both biological and physical components of the planet. The Second International Conference on Closed Life Systems defined biospherics as the science and technology of analogs and models of Earth's biosphere; i.e., artificial Earth-like biospheres. Others may include the creation of artificial non-Earth biospheres—for example, human-centered biospheres or

1089-429: Was renamed to Mulkenmarkt , later to change to Molkenmarkt , possibly named after dairy products sold here or after nearby watermills on the Spree river. In the late 17th century, the trading place was finally closed by order of Elector Frederick III of Brandenburg . The area around the square was densely populated until World War II , when much of Berlin's city centre was destroyed by strategic bombing . In addition,

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