Earth system reservior

    hello everyone! we have been in a new year now, and I hope that this year will be a good year for you guys!
   tody I will talk about the Earth system reservior.
    The physcial environment is divided into three major parts: the water portion of our planet, the hydrosphere; Earth's gaseous envelope, the atmosphere; and,the solid Earth, or geosphere.moreover, the biophere, which is the totality of all plant and animal life on our planet.Thus, Earth can be thought of as consisting of four major spheres: the hydrosphere, atmosphere, geosphere,and biosphere. in addition, I will also introduction the fifth focus:the anthrosphere, which gives us the opportunity to consider resource use in built and technological envronments, as well as human influences on other parts of the Earh system.
    The hydrosphere is a dynamic mass of water that is continually on the move, evaporating from the oceans to the atmosphere, precipitating to the land, and running back to the ocean again. The global ocean is certainly the most prominent feature of hydrosphere, blanking nearly 71 percent of the Earth's surface to an average depth of about 3800 meters. It accounts for about 97 percent of Earth's water. However the hydrosphere also includes the fresh water found underground and in steams, lakes, and glaciers.
  
     
  
  



The atmosphere is the mixture of gases--predominantly nitrogen, oxygen, argon, carbon dioxide,and water vapor--that surrounds Earth.The atmosphere seems very thick to us, but in the context of the whole planet it is a very,very thin layer. The atmosphere  provides many crucial sercices, such as protecting life from damaging solar radiation, and being the reservior for oxygen and carbon dioxide, two gases that are essential for the biosphere. The outermost layer of the atmosphere is, in effect, the boundary of the Earth system, seperate us from our surrounding in space.
    The geosphere is the solid Earth, composed principally of rock and regolith. the surface of the geosphere is a particularly interesting and dynamic place, where energy that comes into the Earth system from outside sources meets energy that comes from within the planet. These forces combine and compete to build up and wear down the materials at Earth's surface, creating the enormous diversity of landscapes around us. the dynamic nature of the geosphere can also be hazardous for human interests, by way of process such as landslides, earthquakes, and volcanic eruptions.
    The biosphere includes all life on Earth. ocean life is concentrated in the sunlit surface water of the sea. Most life on land is also concentrated near the surface, with tree roots and burrowing animals reaching a few meters underground and flying insects and birds reaching a kilometer or so into the atmosphere. A surprising variety of life forms are also adapted to extreme environments.On land, some bacteria thrive in rocks as deep as 4 kilometers and in boiling hot spring. Moreover, air currents an carry microorganisms many kilometers into the atmosphere.
    The anthroposphere is the "human sphere". It comprises people and their interests, as well as huaman impacts on the natural Earth system. The anthroposphere is the part of the natural system that has been modified by humans, for human purposes or as a result of human activities. Another term that applies to the anthroposphere is technosphere, which refers specifically to technology, machines, and the built environment.
    The Earth we live on have many  systems. The life can be live on the planet is beacsuse that the Earth is the right distance from the Sun--not too near, and not too far.
    On the Earth, we can change the enviroment. When the pollution is large, the systems will be changed. There are now so many of us that we are changing Earth  just by being alive and going about our business.
    So if we want to live on the Earth longer, what we should to do for us, or for the Earth?