A. Film diffusion
B. Diffusion through ash layer
C. Chemical reaction
D. Either A., B. or C.
Correct Answer: Diffusion through ash layer ✔
Last Updated: February 20, 2019
A. Film diffusion
B. Diffusion through ash layer
C. Chemical reaction
D. Either A., B. or C.
Correct Answer: Diffusion through ash layer ✔
Last Updated: February 20, 2019