Where did the nile river start and end. what did people do there?

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.

What does the term "deforestation" mean? what landform are we studying that deforestation is impacting greatly in brazil? describe how and why this is happening. plz me!

Wich characteristics make the long ballot ineffective