In this example, the biosphere is very dependent on the hydrosphere.
The treaties did not hold. Indians had no control over Plains People. In 1866, William J. Fetterman got ambushed.
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Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
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Answer:
A. silver
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