Which feature separates watersheds

Plzz on what physical process is responsible for the creation of volcanoes, earthquakes and ocean trenches at the plate margins?

In upholding louisiana's separate car act, the supreme court claimed thatsegregation was not the same as discriminationthe fourteenth amendment did not apply to southern statesdiscrimination was necessary in order to maintain public ordero segregation was unconstitutional based on the fourteenth amendment

When the land and the see warm up at different rates during the day, what is generally the result? -a snow -b rain -c a breeze -d warm temperature