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Sagot :
From largest to smallest they are: Universe, galaxy, solar system, star, planet, moon and asteroid.
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
The biosphere is by far the smallest of our four spheres. Scientists don't know exactly how much life there is on Earth, in part because we don't know how deep life can be found underground, but most estimates indicate that the total mass of the biosphere is less than 1/1000 that of the atmosphere.
Oceans cover more than 70 percent of the Earth's surface, making them the biggest part of the hydrosphere. The hydrosphere is simply the total of all the water in Earth's atmosphere
To know more about biosphere click here
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