Earth Science and Earth Systems?

Keith K

New member
1. Which area of Earth science deals with blanket of air surrounds Earth?

2. What are the three activities of geologists?

3. Which Earth science study the properties and inhabitants of saltwater bodies?

4.Contrast the lithosphere with asthenosphere?

5. what percentage of hydrosphere exits as salt water? what percentage exists as freshwater.

6.which two gases make up 99 percent of gases in the atmosphere? which gas is more abudant?
Can someone help me out on this :P
 
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