Are you asking why the man is worried about getting frostbite? because if so, then he was worried because it would delay him.
Last sentence. Is this question really for high school English?
In drawing/literature, Aesthetic impact is the usage of the combination of all of our senses , emotion, and intuition to relate to a certain beauty of an object.
Having this will allow a certain individual to leverage all the existing space and ingredients at hand in order to create something that would be perceived as 'artform'