FINAL ? 1

There are four major systems that work to run the earth. These systems consist of the Geosphere, the atmosphere, the hydrosphere and the biosphere.
The term Geosphere is often used to refer to the densest parts of Earth, which consist mostly of rock and regolith. The term originally applies to the four nested geospheres identified since Meteorology with the states of terrestrial matter: solid (earth), liquid (water), gas (air), and plasma (fire). The nested geospheres then include the asthenosphere, lithosphere, hydrosphere, atmosphere, and the ionosphere or plasmasphere.
The Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount of water vapor. This mixture of gases is commonly known as air. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night.
The Earth's hydrosphere consists of water in all forms: the ocean, other surface waters including inland seas, lakes, and rivers; rain; underground water; ice; and atmospheric water vapor. The average depth of the oceans is 3,794 m (12,447 ft), more than five times the average height of the continents. This means it is the thing that takes up the most space on earth.
The biosphere is the part of the Earth, including air, land, surface rocks, and water, within which life occurs, and which biotic processes in turn alter or transform. From the broadest biophysiological point of view, the biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, hydrosphere, and atmosphere. This biosphere is postulated to have evolved, beginning through a process of biogenesis or biopoesis, at least some 3.5 billion years ago.
These systems change all the time because of human and what they do on earth. People pollute the earth everyday by doing many different things. I would have to say that the worst of these pollutants are cars they put the most toxins in the air and make the atmosphere unhealthy and very unsafe to all living things. The thing that people do effects peoples LIFE because what people do can kill others in the long run. It would be better if people did pollute so much because it would really help are environment and would help support common good. But everyone knows we cant just polluting in just one day so we should start improving it one day at a time.


http://en.wikipedia.org/wiki/Biosphere

http://gsa.confex.com/gsa