All the water and air on earth gathered into spheres and compared to the
On the Left: All the water in the world (1.4087 billion cubic kilometers of it)
including sea water, ice, lakes, rivers, ground water, clouds, etc.
On the Right: All the air in the atmosphere (5140 trillion tonnes of it)
gathered into a ball at sea-level density. Shown on the same scale as
the Earth.
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