Science: a high carbon dioxide level is going out side the cell membrane with the low carbon dioxide levels. is this diffusin, active transport, or facilitated diffusion

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space