The sentence describing the main idea would be
Greenhouse gasses over the years.
This paragraphs talks about the increasing temperatures that were registered over the past years and what experts think about the warming.
It also explains that in the future, 2015, there could be another year of record heat
It's A. The boy accepts free food of charge from the cafe.
sorry i know its 1 year later since this question was up but i didn't see any answer so I just put it here. Its correct trust me.
The U.S. Code of Federal Regulations defines terrorism as "the unlawful use of force and violence against persons or property to intimidate or coerce a government, the civilian population, or any segment thereof, in furtherance of political or social objectives"
<span>I need to hurry and go to the library; it will close soon. is your answer because
a sentence needs a main clause, which consist of independent </span><span>subject and verb and expresses a complete thought.
; is used when connecting two sentences. It is optional to be used in grammar, and if a period was used to separate the two sentences, it would still be grammatically correct.</span>