Answer:
1a. Lines 30-36 show that the man never thought deeply of things. He did not reason beyond the surface of matters and that was why he never thought that the abnormal temperature could be indicative of danger.
1b. These lines are a foreshadowing of the danger or negative consequence the man will face as a result of his inability to use his instincts.
2. (I believe the word should be naturalistic). A naturalistic view of life sees all events in life as natural and not having any spiritual or metaphysical undertones. In lines 5-20, the man had a natural view of the weather condition as being just normal. Also, when the water from the man's mouth became ice, he believed that to be natural and not having any further meaning.
Explanation:
In further explaining how the man regarded 50 degrees below zero, to mean 80 degrees of frost, the author showed that the man did not think deeply about matters. For example, he never reasoned about man's weakness and how fragile he is from his inability to cope with high and very low limits of temperature.
These things never made him think about life and death. These are signs that he might pay dearly for his inability to use his senses.