We all remember from school the picture below of the water cycle, we used to think the cycle could continually renew itself so it was impossible to use up the water.
Now we know it's possible to use the water faster than it is renewed into the cycle, if we add in some industrial conversion of water into various products chuck in a bit of pollution and we end up locking more out of the cycle. The problem can be solved if we reduce the rate of increase thereby giving mother nature time to catch up with our consumption.
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