Attached you will find a file with the answers to the four questions provided.
Which clause is an independent clause?
Answer:
<span>The winter in Norway is long and harsh.
This the answer because an</span><span> </span>independent clause<span> is a sentence.</span>
This is most evidently a metaphor. The thing to keep in mind when analyzing literature/poetry is that if you see figurative language making comparisons/drawing parallels between two differing things--instances where the meaning is not literal such as how injustice is not really a fire and has no flames--it's a safe bet you'll have on your hands a metaphor.