PLEASE HELP WITH THIS ONE QUESTION

'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.

Give an example of a trait that is controlled by more than one gene.

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.