Hi. Unfortunately I was unable to access the article this question refers to. However, I will try to help you in the best possible way.
We can see that the view that Chicago is “…at the forefront of the green-roof movement” is refuted, with the phrase showing that Germany has a much larger amount of green roofs than Chicago. This shows that Chicago does not deserve the title of "forefront" in the use of these roofs, as there are places, such as Germany, that have taken the lead in this attitude.
Unfortunately, without reading the article it is not possible to know how it affects the general tone and mood of the article. However, considering that this is an informative article, we can consider that this rebuttal, presents the feeling that green roofs are something that is being established very slowly in America, even though this is a very beneficial attitude for society. Furthermore, this rebuttal may present a delayed mood, as it shows that America is late in implementing this technology. This can be seen because the tone and mood of a text establish the sensation and feeling that the author of the article wants to promote through reading.
 
        
             
        
        
        
I’m pretty sure it is to read the text
        
                    
             
        
        
        
Answer:
sectional.
Explanation:
the definition of sectional is 'relating to a section or subdivision of a larger whole.'
 
        
             
        
        
        
Answer:
An absolute phrase is a group of words that modifies an independent clause as a whole. An absolute is made up of a noun and its modifiers (which frequently, but not always, include a participle or participial phrase). An absolute may precede, follow, or interrupt the main clause
Hope this helps
-Amelia