How many presidents served in the White House

Which of the following farming methods the inca farm the hillsides a) slash- and- burn b) crop rotation c) irrigation canalsd) dam construction

An alliance of two political parties is know as? a. majority b. coalition c. candidate d. government

How were the okanogan highlands formed? a. by subduction, which caused huge folds in earths surface b. as a result of retreating glaciers carving great valleys into the earth c. when molten rock from under the earth approached the surface d. when the collision of volcanic island chains and ocean rocks formed new earth