Irish History Dvd

Important of Historiography

Tag: oxygen

Why were the prehistoric insects huge?
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Why were the prehistoric insects huge?

Giant insects ruled the prehistoric skies during periods when Earth’s atmosphere was rich in oxygen Then came the birds. After the evolution of birds about 150 million years ago, insects got smaller despite rising oxygen levels, Insects reached their biggest

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The Age of Giant Insects
The Biggest Sloth That Ever Lived, and 6 Other Gigantic Animals
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The Biggest Sloth That Ever Lived, and 6 Other Gigantic Animals

[♪INTRO] Sharks bigger than a city bus. Snakes twice as long as anyone alive has ever seen. Go to a natural history museum, and it’s populated with giants so huge, everything alive today seems small by comparison. Unless, of course,

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How I held my breath for 17 minutes | David Blaine
17 SUPER FUN OUTDOOR GAMES AND ACTIVITIES