Scientists are searching for planets that are similar to Earth because when resources are used up, we can resort to another planet. Whether it be to travel to live at a different planet or to collect resources from there, either option would be nice for a last resort. 
        
             
        
        
        
Whittier used "We" and "Thou" as forms of repetition in his song of slaves in the desert.
We: He used we as to show that basically slaves WERE NOT alone in this at all. In a way at that time, every single slave was connected with each other no matter what.
Thou: From what i have seen, Whittier is using "Thou" to refer to God. For example: "We are fools, but Thou art wise"
For the devices, he's using Anaphora for "Thou" and maybe Conduplicatio for "We".
        
                    
             
        
        
        
<em><u>Answer:</u></em>
b) The comma attempts to join two independent clauses.
<em><u>Explanation:</u></em>
When two ideas come together and either one of them can stand by itself as its own, independent sentence, then the use of the comma is  correct:
Comma + a conjunction (and, but, for, nor, yet, or, so)
 
        
             
        
        
        
Answer:
In “The Gettysburg Address,” President Lincoln makes the claim that the Civil War is a war worth fighting. Every now and then, he dramatically pauses. Every dramatic pause makes his speech is, the more convincing it to the ears of the people. That's why a lot of the people are really amazed at his speeches.
Explanation:
 
        
             
        
        
        
Answer:
The correct answer is B. 
Explanation:
The excerpt from Tinker v. Des Moines that shows how precedent helps support an argument is: "Other cases cited by the Court do not, as implied, follow the McReynolds reasonableness doctrine. West Virginia v. Barnette, 319 U.S. 624, clearly rejecting the 'reasonableness' test, held that the Fourteenth Amendment made the First applicable to the States". This excerpt shows how the Supreme Court uses decisions of other cases already resolved to support arguments within cases in decision at the moment .In the present case, the Court uses the precedent West Virginia v. Barnette, in which the doctrine of "reasonableness" of McReynolds is not admitted, to apply it to the case Tinker v. Des Moines.