isohyet — rainfall and survival and good news

Isohyet- line on a map indicating rainfall patterns.

Below the 100-400mm isohyet land becomes uninhabitable.

11 african countries sign the great green wall initiative, a 15km wide 7000 km long green belt to stop the desert.

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Posted on February 28, 2012, in Uncategorized and tagged , , , . Bookmark the permalink. Leave a comment.

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