The Earth, the artificial satellite on which we live, is very complex, although looks like a naive planet. It is do up of three main features: cut buns, telephone line, and weewee; land on earth is called the lithosphere; the hydrosphere is the Earths water; and the atmosphere is the air we breathe.
The atmosphere, a mixture of gases in the air, took 4.5 billion years to evolve. Methane and ammonium hydroxide were deadly gases common in ancient atmospheres. Chemical reactions on earth ca usaged the breakdown of theses gases into nitrogen, hydrogen, and carbon dioxide. The atmospheres first mixture was made up of vol rout outic matter. Condensation (when water vapor changes back into liquid) occurred, and a lot of volcanic water vaporized to accept the first oceans. As time went on, photosynthesis (a chemical process plants use light to make group O) made it possible for new marine life capable of respiration. Eventually, slightly 570 million years ago, the oxygen levels were high sufficiency for marine life to survive. The atmosphere had enough oxygen for air-breathing land animal about four hundred million years ago. The four major gases found in the atmosphere today are nitrogen, oxygen, carbon dioxide, and water vapor.
The hydrosphere is a layer of water in the form of oceans, seas, lakes, and rivers, which cover about 70.8 percent of the earth.
The hydrosphere is the name for the layer water on Earth. The water on Earth is a distinctive feature that distinguishes our planet from others in the solar system. No liquid water can be located anywhere else besides it. Because of the Earths mass, chemical composition, atmosphere, and the decent distance from the Sun the conditions let water to exist principally as a liquid. The assortment temperatures and pressures of the planet allow water to exist in all three states: solid, liquid,
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