2.  It includes all the air in the earth.  It has four mane layers ionosphere, Mesosphere,Troposphere,and the stratosphere.  The present composition of the atmosphere is 79% nitrogen, 20% oxygen, and 1% other gases.

3.  The atmosphere is 371 miles long.  The atmosphere protects us from high energy radiation and the frigid vacuum of space.  Earths atmosphere protects life on the planet.

4.  The hydrosphere includes all the water in the earth.  Water is the most common substances on the earth.  Scientist believe that the amount of water on earth does not change.  Water in the ocean moves in huge currents of water.

5.  Water is everywhere in your body in the air and in rocks.  The ocean is 70% of the hydrosphere 20% is in the air 10% in lakes and ponds.

6.  The biosphere is the biological component of earth systems, which also include the lithosphere, hydrosphere, atmosphere and other spheres.  The biosphere includes all living organisms on earth even the dead things on earth.  It also includes the rocks the dirt and that matter.

7.  The biosphere cannot exist without the other spheres.  The biosphere is the defended as the sphere or area around earth.  The biosphere is the largest sphere that exist.

8.  In Antarctica the thick ice cap has pushed the lithosphere below sea level today.  Construction of volcanoes, Deposition of sediment,Rise in sea level, Formation of large lakes and reservoirs are all kinds of loading.  the lithosphere is actually part of the upper mantel and crust.

9.  The lithosphere is basically the layer of the earth that is strong enough to flex rather than flow.  Its top is easy to see its at the Earths surface but the base of the lithosphere is a transition rather than a sharp boundary.  It flexes when loads are placed on it or took off.

10. The biosphere drinks the hydrosphere and is part of the lithosphere, and gives off to the atmosphere. the hydrosphere is in the atmosphere and the water goes into the clouds. There is moister in the dirt and rock of the lithosphere. The lithosphere is the dirt and minerals that plants need to live. And they help each other.

11. 