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• v  make sour or more sour
• v  turn acidic

• There may be enough of it to acidify the rain over large areas, with adverse effects on vegetation.

• sour
• acidulate
• acetify

• sweeten
• alkalize

News & Articles

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• CO2 causing oceans to acidify at 'unprecedented' rate, scientists warn
  The world's oceans have become 26% more acidic since the start of the Industrial Revolution and continue to acidify at an "unprecedented rate," threatening marine ecosystems, aquaculture and the societies that rely on them, scientists say.
  Nov. 14, 2013 - CNN
• 'Oceans acidifying rapidly'
  The world's oceans have become 26% more acidic since the start of the Industrial Revolution and continue to acidify at an "unprecedented rate," threatening marine ecosystems, aquaculture and the societies that rely on them, scientists say.
  Nov. 14, 2013 - CNN