Why is the boiling point of water lower in the mountains than it is at sea
level?

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.

Que actos del pueblo simbolizaron el inicio de la revolucion y la caida de la monarquia?

Who gave the famous "i have a dream" speech at the march on washington?