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Image Credit
/-/https/www.sciencebuddies.org/cdn/Files/6845/11/german-christmas-pyramid.jpg)
Description:
A German Christmas Candle Pyramid has a tower with 3 levels and a fan placed on top
Source:
Wikimedia commons, Yvonne Bentele
License:
Creative Commons Attribution-Share Alike 4.0 International license
Source URL:
http://commons.wikimedia.org/wiki/File:2014-12_Weihnachtspyramide_Blech.jpg
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/-/https/img.youtube.com/vi/pK-iPwtW4W8/0.jpg)
/-/https/img.youtube.com/vi/-xMj-Q1S7_g/0.jpg)