At what age does the brain grow the most connections

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

'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 part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?