Which geographic features are more common in australia than in new zealand

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.

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What if the united states, mexico, and canada took the eu’s example and joined to forms north american union ? based on your knowledge of the europe union, describe two setbacks or hurdles that this idea might face