The ‘pH’ is a measure of acidity – the lower the number the more acidic the ocean becomes. On a geological timescale, ocean pH has been relatively stable. Recently, oceans have been acidifying fast and this is projected to continue at a rate unprecedented for millions of years.
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Showers require as little as a third of the water! However, this is true as long as you keep them under five minutes long. So be quick and use a shower timer to keep track of time next time you hop in!
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