Which of the following statements is correct? (1)
a)
Diffusion is observed only in gases and liquids.
b)
Diffusion is observed only in liquids and solids.
c)
Diffusion is observed only in solids.
d)
Diffusion is observed in gases, liquids and solids.
ответ с
с
с
с
с
с
у меня точь в точь такое было , правильно