What is the difference between the ray finned fish and lobe finned fish?

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

'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.

Which entry is in the wrong position in the table?