Many creatures will be threatened as carbon dioxide makes the oceans increasingly acidic. Some species may already have been harmed. As Roger Harrabin finds out, scientists fear we may be heading for a huge extinction in the seas.
Many creatures will be threatened as carbon dioxide makes the oceans increasingly acidic. Some species may already have been harmed. As Roger Harrabin finds out, scientists fear we may be heading for a huge extinction in the seas.
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