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Happy Dragon 100,000 Whys [26] – Why do ducks walk in a line?
$9.50 $7.50
Why do ducks walk in a line?
Why do we drool when we sleep?
Why do wolves howl?
Why…
Why this? Why that? There are many questions one can easily ask but hard to get the right answers. Come to think of it, there are many scientific mysteries hidden in our everyday life.
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