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Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).
Two 4.5 billion-year-old meteorites found on Earth that contained liquid water alongside a wide diversity of deuterium-poor organic compounds further support this. [44] Earth's current deuterium to hydrogen ratio also matches ancient eucrite chondrites, which originate from the asteroid Vesta in the outer asteroid belt. [ 45 ]
The water cycle is also essential for the maintenance of most life and ecosystems on the planet. Human actions are greatly affecting the water cycle. Activities such as deforestation, urbanization, and the extraction of groundwater are altering natural landscapes (land use changes) all have an effect on the water cycle.
The Fountain of Youth is a mythical spring which supposedly restores the youth of anyone who drinks or bathes in its waters. Tales of such a fountain have been recounted around the world for thousands of years, appearing in the writings of Herodotus (5th century BC), in the Alexander Romance (3rd century AD), and in the stories of Prester John (early Crusades, 11th/12th centuries AD).
An artesian spring is created when the pressure for the groundwater becomes greater than the pressure from the atmosphere. In this case the water is pushed straight up out of the ground. [7] Wonky holes are freshwater submarine exit points for coral and sediment-covered, sediment-filled old river channels. [8]
The intense reality of life in Malawi makes for some sad scenes and a bit of violence, too—but the cultural exposure promotes empathy and is ultimately profoundly enriching for kids old enough ...
Image credits: nineteensickhorses #3. The disappearance of Kyron Horman. The kid was at school with his stepmom, she saw him walk down the hall in the school and he was never seen again.
It’s a part of this life stage, and it’s one that hasn’t been taken nearly seriously enough, but it’s not the entirety,” she writes. 3. ‘I’m never going to retire’: Ambition has no ...