The Grinnell Glacier in Glacier National Park had a surface area of 1,020,009 square meters in 1966. Its area was 615,454 square meters in 2005. The 2005 surface area is what percentage of the 1966 surface area?

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Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.