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White crowned sparrow
Platycnemididae are a family of damselfly called white-legged damselflies.
Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim
A spark plug from an engine that had a blown head gasket. The white deposits could be from the ...