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| Price | Condition | Delivery | Seller | Action |
| $99.99 | Digital |
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Mark Pozsgai
reviewed Space: The Fragile Frontier on July 15, 2013
Space: The Fragile Frontier
Airplanes have separate parts for lift (the wings), and for thrust (the propeller or a jet engine). For a flying animal (there have been four taxons: insects, pterosaurs, birds and bats) a jet engine is too hot, and a propeller is a kind of a wheel, which never evolved in animals: how would you supply it with blood? So birds and bats must use their wings for both, and the much bigger airplanes don't have to.
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Add Space: The Fragile Frontier, Protection of the space environment—for the study of and use by successive generations of explorers and developers—is an important concept that has yet to enter the collective consciousness of the space community. This book illustrates the relevance of th, Space: The Fragile Frontier to the inventory that you are selling on WonderClubX
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Add Space: The Fragile Frontier, Protection of the space environment—for the study of and use by successive generations of explorers and developers—is an important concept that has yet to enter the collective consciousness of the space community. This book illustrates the relevance of th, Space: The Fragile Frontier to your collection on WonderClub |