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Politics : Politics of Energy

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To: Wharf Rat who wrote (41491)	7/24/2013 9:09:43 PM
From: Brumar89	Read Replies (2) of 86356

The ocean acidification threat is a big can of worms. I asked Professor Brice Bosnich to help create a quick reference page on the chemistry and was pleased he could find the time to help. Here’s everything you wanted to know about the basics… He explains what pH means, and points out that: Ocean pH varies by 0.3 naturally. Claims of acidification since 1750 are based on dubious models and few observations. There are reasons to assume that marine life will not be overly affected by an increase in ocean acidity due to atmospheric carbon dioxide: Ocean life evolved and survived far higher levels of CO2 for millions of years in the past. Marine organisms actively create carbonate shells (using energy) which means crustacea, corals and molluscs aren’t automatically prey to pH changes in the same way that say a limestone rock would be. The world’s oceans may have warmed a mere 0.17C since 1955, hardly a significant threat to marine life. We also find out that acidic water is added to the ocean from rainfall and floods (and he explains why raindrops will always be acidic). Message 28569272

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