Question

name the process by which co2 and o2 gases get exchanged across the cell and its external environment

Answer 1

Thanks for asking the question.
Diffusion is the process in which CO2 and O2 gasses exchanges across the cell and its external environment.
It is defined as the movement of atoms or molecules from a region of higher concentration to region of lower concentration, which may also be known as the movement of substances down the concentration gradient.
Hope it helps.