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20
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Obama
Collected Videos
Added Video
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01:34
Plate Tectonics - Sea-Floor Spreading
46
B2 High-Intermediate
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04:52
Why Does The Earth Have Layers?
86
B1 Intermediate
US
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01:10
Divergent Boundary—Fast Spreading Ridge Educational
51
B2 High-Intermediate
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02:14
What is a Volcanic Hotspot? (Educational)
154
B2 High-Intermediate
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00:26
What does mantle plume mean?
15
B2 High-Intermediate
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02:57
Stratigraphic Cross Section—Interpreting the Geology…
108
B2 High-Intermediate
US
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06:52
How to Classify Volcanoes
90
B2 High-Intermediate
US
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06:11
Rates of Plate Motions
39
B2 High-Intermediate
US
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03:15
【TED-Ed】Conserving our spectacular, vulnerable…
1049
B1 Intermediate
Serena
serena1214
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