Okay so, you didn't include a screen shot or anything of what the text is, so I tried my best to answer your question without it.
There may be no land at the North Pole due to the fact that it could just all be ice that's floating atop the Arctic Ocean. Over the past few decades, scientists have discovered that the ice is thinning, therefore the likeliness of land beneath it is not great.
The answer can be it but I don't know if it is a first-person singular pronoun.
Explanation:
what he means is that he takes alot more risks then anything else
<span>nauseous mean inclined to vomit or throwing up. feeling sick.</span>
D)He stops trying to explain the situation to the soldiers.