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Some male birds and mammals congregate in communal courting grounds called leks.
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
The declining age of menarche over the past 150 years has been measured in many European countries,
Children make a fast adjustment to a new culture, although, as with these Hmong children in ...
The incidence of overweight and obesity among adults and children
Hypnosis and Special Abilities