Prickly heat is a skin rash caused by excessive heat or humidity. The rash is made up of raised, red, pinpoint spots. The surrounding skin also becomes red. Prickly heat occurs especially in areas of…
In early spring, the mother grass frog lays a thousand or more eggs in a lake or pond. Five days later, tiny wiggly tadpoles come out of the eggs. > After two months, the tadpoles grow little…
The astronomer scans the depths of space To find an unknown star. But how will he know its distance? Mathematics soon tells him how far! The engineer plans a gleaming bridge, To span a broad, blue…
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