What is the estimated volume of water that covers the earth

The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface.

Hey there! The total (estimated) value of water on earth is about 1 billion. Or 1.386 billion to be exact!

Hope this helped!

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developed countries have tended to improve the environment, while developing countries have tended to damage it.