What is the last thing you learned? #SnowballEarth ha! The great geological change, the tipping point (70% ice coverage, causes and more. The Great unconformity #GreatUnconformity Always wondered what that divide, dividing line in the great … Read on blog or Reader S. Hall, Ottawa, World Read on blog or Reader Promots – Learn Daily S Hall Ottawa March 7 What is the last thing you learned? #SnowballEarth ha! The great geological change, the tipping point (70% ice coverage, causes and more. The Great unconformity #GreatUnconformity Always wondered what that divide, dividing line in the great mountain ranges, eras in rock, sandstone, limestone, etc. Ha! Zzz https://en.wikipedia.org/wiki/Great_Unconformity Read more of this post Comment Like You can also reply to this email to leave a comment.

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