The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
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Interchangeable parts generally reduce costs and increase demand (and production).
Decreases. The higher you go up, the less air will push on your body. Thats why astronaughts need space suits in space to keep their bodies pressure-ized.
Its c.97
though its 96.5
<span>To break the numbers down, 96.5%
of all the Earth's water is contained within the oceans as salt water,
while the remaining 3.5% is freshwater lakes and frozen water locked up
in glaciers and the polar ice caps. Of that fresh water, almost all of
it takes the form of ice: 69% of it, to be exact.</span>
Salt water makes up 97 percent of the earth's waters as 3 percent is only fresh water.
