Which statement is true about folding in sedimentary rock layers? a. overturned folds have no trough. b. downfolds are called synclines. c. upfolds are called synclines. d. symmetrical folds are called monoclines.

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.