what does the phrase"at the mercy of"suggest about the waether during the time the Norse lived in Greenland in this following sentence:"The idea that the Norse who settled Greenland were totally at the mercy of the weather creates a convenient narrative."

i believe that dan is so anxious because he dose not know what awaits him when he gets there. but i dont know to be honest

obama was told in early july 2004 that he was chosen to deliver the address, and he largely wrote the speech himself, with later edits from the kerry presidential campaign.

this isnt an english question.