On a average how many oil spills are there in Nigeria one of Africa’s biggest oil exporters

Apsychologist has developed a series of personality inventories and wants to determine if they are valid. one of the scales measures perfectionism, so he asks a colleague for advice on how to establish the validity of this scale. the colleague tells him that if he were to find a sample of people with personality disorder, these people would obtain high scores on a scale that measures perfectionism.

The vietnam war was considered by many to be america’s first unopposed win independent war defeat

What would happen to the tides if there was no moon and no sun in the sky?