No it is not. It is an adverb phrase since it lacks a subordinating conjunction.
Adverb clauses must be preceded or started by a subordinating conjunction such as after, if, because or although. For a sentence to qualify as an adverb clause it must include in its body a subject and a verb.
As a general rule you can use the following formula:
An adverb clause equals a subordinate conjunction plus a subject plus a verb, and it should be answering how? when? where? or why?
Answer:
The correct options are:
A) Jonas has homework. It isn't finished. and
D) Jonas has homework, it isn't finished.
Explanation:
In all the correct instance, the sentence is constructed such that there are still two independent clauses.
In A above, the clauses are clearly identified and so is the point of their separation.
The same is true for D.
In B, C, and E the sentences are no longer independent.
In F, the demarcation between two sentences by the semicolon is evident however the second half of the sentence is no longer dependent as it is missing the pronoun "it".
Cheers!
Answer:
A. You can also recycle your paper, glass, and plastics to help the
environment.
Explanation:
This has nothing to do with composting; it's a different topic.