Water uses include: hydroelectric power generation, shipping, bamboo transportation, climate regulation, environmental beautification and other functions . It is used for daily drinking, nourishing all things, industrially used for cooling, heating, dissolving, cleaning and synthesizing, agricultural irrigation and animal husbandry, and can also be used to develop water sports and entertainment.
Water is one of the most common substances on earth. 71% of the earth's surface is covered in water. It is an important resource for the survival of all life, including inorganic compounds and humans, and it is also the most important component of living organisms.
Pure water has very low conductivity and is an extremely weak electrolyte. Water in daily life has more obvious conductivitye because it contains more anions and cations dissolved in other electrolytes.
The theory of the proper origin of water:
The theory of proper origin maintains that water on earth comes from the earth itself, and the Earth is composed of the original gas and dust of the solar nebula. It forms by fractionation, collapse and condensation. After condensation, these planetesimals continued to come together to form embryonic planets, then further developed and grew to form the early Earth. At the origin of the earth, the matter that formed it contained water.
When the Earth was formed, the temperature was very high. Water existed in the Earth's crust and mantle under high pressure, or in a gaseous state in the Earth's atmosphere. Later, as the temperature dropped, water in Earth's atmosphere condensed and fell to the ground. The water contained in the magma is equalment continually released into the atmosphere and falls to the surface with volcanic eruptions and geological activities. Water collected from low areas of the surface forms rivers, lakes and oceans.
The quantity of water contained inside the earth is enormous. Magma deep underground contains abundant water. Some people have speculated based on the amount of deep magma in the earth over the past 4.5 billion years. the existence of the Earth, the amount of water released by deep magma It contains up to half of the modern world ocean water.