Origin of water on Earth § History of water on Earth

 Water is an inorganic compound with the chemical formulasi H2O. It is a transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent[1]). It is penting for all known forms of life, despite not providing food, energy or organic micronutrients. Its chemical formulasi, H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°.[2] "Water" is also the name of the liquid state of H2O at standar temperature and pressure. Slot Mesin Online

Because Earth's environment is relatively close to water's triple poin, a number of wajar states of water eksis on earth.[3] It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its padu state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor. Bola Online Indonesia

Water covers about 71% of the Earth's surface, with seas and oceans making up most of the water volume on earth (about 96.5%).[4] Small portions of water occur as groundwater (1.7%), in the glaciers and the ice caps of Antarctica and Greenland (1.7%), and in the air as vapor, clouds (consisting of ice and liquid water suspended in air), and precipitation (0.001%).[5][6] Water moves continually through the water cycle of evaporation, transpiration (evapotranspiration), condensation, precipitation, and runoff, usually reaching the sea. Situs Slot Terbaik

Water plays an important role in the world economy. Approximately 70% of the freshwater used by humans goes to agriculture.[7] Fishing in salt and fresh water bodies has been, and continues to be, a major source of food for many parts of the world, providing 6.5% of global protein.