Answer choice A. So you have an Idea of what to look for and what you already know about the reading.
Reaching the conclusion of reasoning or evidence
When thermal radiation hits the earth's surface, it scatters. The heat is trapped by greenhouse gasses such a helium and water vapour. The heat contained keeps the surface warm.
Hey there! Hello!
I believe the comma should go here:
<span>"I saw three kids sitting on the porch, across the street."
"Across the street" is a sentence fragment. These are typically separated from the rest of the sentence with a comma. Sentence fragments may seem like sentences, but you couldn't make it it's own sentence, since it doesn't contain a verb. A sentence must have a verb and a subject in order to be considered valid, and in the case of fragments, they're purely there to add more to the current sentence.
I hope this helped you out! Feel free to ask me any additional questions if you have any. :-)</span>