Hello,
Here is ur answer
sparta, roman empire, athens, classical greece, and greco-persian wars.
Hey there!
Airplanes must be pressurized when flying at high altitudes so that the oxygen levels stay normal for us to breathe. The higher you go up, the thinner the air gets, which causes breathing problems for us humans.
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london ,ruffer ,i do not know no more
Approximately 97.5% of the earths water is salt water (saline), and 2.5% is fresh water hope this helps.
