Because of the greater flexibility of their pectoral fins many bony fish swim, while sharks cannot.

(A) forward

(B) vertically

(C) backward

(D) laterally

a time line cause it goes from 685 to 978

the answer is a) cell division.

hope this !

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.