Lake – a mass of water or other liquid of considerable size, situated on the land. The large number of lakes on Earth is freshwater, and most lie in the Northern hemisphere at higher latitudes. In the ecology of the surrounding lake environment is referred to as lacustrine deposits. Large lakes are sometimes referred to as “inland seas” and small seas are sometimes referred to as lakes. Small lakes tend to put the word “lake” after the name, as in Green Lake, while larger lakes often invert the word order, as in Lake Ontario, at least in North America.
Most lakes have a natural outflow in the form of a river or stream, but some have not, and lose water solely by evaporation and/or underground leakage. They are called internal lakes.
The term “lake” is also used to describe such a feature as lake Eyre, which is a dry basin most of the time, but can be filled with seasonal heavy rains.
Many lakes are artificial and constructed for hydro-electric power, regional purposes, industrial use, agricultural use or domestic water supply.
Evidence of extraterrestrial lakes exists. The testimony of lakes filled with methane, was approved by NASA to return the automatic research station “Cassini” – observing satellite Titan, which moves around the planet Saturn.
The origin Continue reading
The title of this article may seem rather strange, because the water in our understanding has always been a symbol of life. However, the errors of nature or careless of human activity has made some lakes in different parts of the planet into dangerous objects.
LAKE KIVU (CONGO)
The picturesque lake that is of interest to scientists around the world, due to the danger posed by this natural object. Under the layer of water stored huge deposits of carbon dioxide and methane formed by bacteria that turns the water body into a bomb with delayed action. Earthquake or volcanic activity will cause dangerous ingredients will mix and the lake will explode and this will lead to the deaths of around 2 million local residents.
Moon, as well as Kivu is volatile. Carbon dioxide emissions from the lake in 1984 resulted in the deaths of 37 people.
Near Mono lake Nwas, similar in the degree of its danger for all living things. Giant carbon dioxide emissions in 1986 led to the explosion of the lake and the deaths of several thousand local residents as a result of poisonous gas. The lake is dangerous and now, a minimal shift of the earth’s crust and volcanic activity can lead to a new explosion Continue reading
Savannah — the sea of grasses with occasional Islands of trees with the canopy of the umbrella. Vast areas of these amazing natural communities are in Africa, while the savanna in South America, and Australia, and India. A distinctive feature of the savannas is the alternation of arid and wet seasons that lasts for about half a year, one after another. The fact that subtropical and tropical latitudes, where there are savannas, characterized by the change of two different air masses humid Equatorial and tropical dry.
Significantly influence the climate of savannas monsoon winds that bring seasonal rains. Because these landscapes are located between the very humid Equatorial areas with natural forests and very dry areas of deserts, we are constantly influenced by those and others – approx. But the moisture is present long enough in the savannas, there grew tiered forest and dry “winter” in 2-3 months do not allow Savannah to become a harsh desert.
The annual rhythm of life of the Savannah is associated with climatic conditions. During wet periods a riot of grass vegetation reaches a maximum — the space occupied by savannas, turning into a living carpet of herbs. The picture was broken only by the low, gnarled trees — acacia and baobab trees in Africa, fan palm, ravenala in Madagascar, cacti Continue reading