('US') the 'food pyramid' [=a drawing or chart that is shaped like a pyramid and that shows the type of food you should eat for a healthy diet]
the ancient 'pyramids' of Egypt
a 'pyramid' of apples/oranges
(..) ago expansion started... wait! The earth began to cool the autotrophs began to drool, neanderthals developed tools we built the wall we built the pyramids math,science,history, unraveling the mystery that all started with a big bang bang! -= =- proudly presents... (..)2007 TvShow: The Big Bang Theory Title: Pilot Season: 1 Episode 1