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01:00
How do migratory birds find their way? | #aumsum
26
B1 Intermediate
US
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04:30
Rational Numbers | #aumsum
4
B1 Intermediate
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00:59
How does placebo effect work? | #aumsum
19
B2 High-Intermediate
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06:16
Pythagorean Theorem | #aumsum
12
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05:22
What causes body odor? plus 4 more videos... #aumsum
18
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01:31
Where does the fat go when you lose weight? |…
42
B1 Intermediate
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03:31
Why do Cats have Vertical Pupils? | #aumsum
10
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01:24
How are pearls formed? | #aumsum
19
B2 High-Intermediate
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00:58
Why do dogs wag their tails? | #aumsum
23
B1 Intermediate
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05:02
How do bees make honey? plus 4 more videos.. #aumsum
18
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01:10
What are eye floaters? | #aumsum
22
B2 High-Intermediate
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01:01
How does an owl fly so silently? | #aumsum
9
B2 High-Intermediate
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