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結果 : how many years ago did the ice ages occur
6:35

How Ice Ages Happen: The Milankovitch Cycles

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2:07

How Often Do Ice Ages Happen?

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15:28

The Geography of the Ice Age

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5:07

When will the next ice age happen? - Lorraine Lisiecki

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18:07

New Evidence We Are Entering An Ice Age Termination Event - EXPLAINED

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8:44

How many ice ages are there?

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3:56

How did the ICE AGE happen?

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8:06

A Brief History Of How Homo Sapiens Survived The Last Ice-Age

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13:15

A New ICE AGE Is Coming: Prepare To Freeze By 2050!

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49:12

Why Did The Earth Totally Freeze For 100 Million Years?

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3:40

Ice Ages

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13:44

What Causes an Ice Age?

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929,368 回視聴 - 4 年前

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6:24

History of Ice Ages

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3:26

Ice Age: How Many Ice Ages?

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2:09

What is an Ice Age?

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414,009 回視聴 - 11 年前
14:04

Top 5 Ice Ages & Ice Age Causes Through Earth History | GEO GIRL

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26,189 回視聴 - 1 年前
4:49

What is an Ice Age? | Major Ice Ages & Timeline | Earth Science for Kids

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6:16

Ice Ages & Climate Cycles

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86,718 回視聴 - 9 年前
6:34

What If We Entered a New Ice Age?

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244,902 回視聴 - 2 年前
9:46

New Study Finds Possible Causes For Earth Ice Ages

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124,090 回視聴 - 4 年前