$9.50 $7.50
“Why do cats have pupils of different shape?
Why must we wash our hands?
Why does a chair has a backrest?
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.”
$9.50 $7.50
$9.50 $7.50
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