The reverse transcriptase is an enzyme which is used to (B) make DNA from RNA. It generates a complementary DNA from a RNA template and that is why it is called reverse transcriptase.
<span>D It is a moment of realization.
An epiphany is a moment when someone realizes something in an instant. In the passage it says that "Feld had a sudden insight." The sudden insight is his moment of realization that Sobel had made it clear to Miriam that he loves her.</span>
When talking about recycling, people don't seem to consider the recycling of clothing.
The comma should be placed between the first use of recycling and people. The subordinate clause is "when talking about recycling". This is a clause because of the word "when". When makes the reader wonder when what? The main clause is "people don't seem to consider the recycling of clothing."