Question

how do substances like CO2 and H2O move in and out of al cells

Answer 1

CO2 moves in and out of the cell by the process of diffusion.
H2O moves in and out of the cell by the process of osmosis.

Answer 2

CO2 and H2O move in and out of a cell by the process of diffusion from a region of high concentration to a region of low concentration.When the concentration outside the cell becomes low and concentration is high in the cell they move out.