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Wood first appeared in plants called progymnosperms.
Adults in late middle adulthood frequently look forward to spending more time with their partner
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus
Some ignition coils are electrically connected, called married (top figure), whereas others use ...
A square matrix P is called a permutation matrix if each row and column of P contains exactly ...