Okay, I saw another question like this before. I cant write an essay for you. But I can give you pointers and tips.
Answer:
redness ravages
Explanation:
its 2 of the same letter right next to each other
Answer:
The first sentence
Explanation:
The rest of the sentences have conjunctions like 'but' and 'because'. They're connecting two sentences together with a comma. The first one is one simple sentence with no commas or conjunctions. A conjunction is a word that connects two sentences to make a compound sentence.