$9.50 $7.50
“Why shouldn’t we eat potatoes that have sprouted?
Why doesn’t a roly-poly toy topple over?
Why do we get heat stroke ?
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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$9.50 $7.50
$9.50 $7.50
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