Answer:
I think it is the variable.
Explanation:
size hence streams are little and rivers are bigger than streams because a stream connects between two or more rivers
mark brainliest please :)
"different ears"
According to <span>Broadbent's study, depending on which ear the stimulus was done, one of the channels were used. If both ears were used then there was a channel-swapping phenomenon that proved his theory of auditory attentional selection.</span>