Which events most likely occurred at the boundary between the South American Plate and the Nazca Plate? Check all that apply. destruction of crust
creation of rift valleys
formation of a trench
separation of two plates
subduction of one plate

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.