Answer:
he feels as thou the sea is a place of uncertainty at one minute. The sea can be your friend and then the next minuet it can be an unexpected unforgiving murderer.
Explanation: He wants to talk to her about how he feel.
Answer:
It creates uncertainty because the audience cannot be sure if the ghost is actually present, or if Macbeth has simply gone mad.
Langues chose, style of writing, and length of writing would be my answers.
tell me if i'm wrong