Answer:
Okay, I dont know the poem you're talking about but I'll give this a go.
Yes, it is a metaphor, and it's obviously symbolic.
green here means Agriculture, plants, trees or generally speaking (Nature)
And gold would mean something that is precious,Valuable, not necessarily money but it might be money too.
The writer is insinuating that Nature is precious, Valuable.
The writer can also be saying that there is riches/money in Agriculture.
Now depending on the full context of the poem, you can pick either interpretation.
I hope I made it as simple as possible.
The correct answer is "needs".
<h2>Topic: Simile</h2>
The figure of speech used in this sentence is a simile.
A simile compares two things using the words "like" and "as"
In this sentence, the simile is being used to provide the characteristic of the dancer as to how they are gliding.
In other words, the simile is describing how the dancer was gliding.
Extra:
A simile may at times be confused with a metaphor which is the same thing as a simile however metaphors do not use the words "like" and "as".