Humidity in the air is measured with a hygrometer.
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Answer:
Through his credibility, reasonable persuasions, and evocation of his audience’s childhood memories, Dr. Randy Pausch in “The Last Lecture” presented an argument that one can lead a life of true happiness and fulfillment if one has a mindset centered upon bettering the lives of their neighbors.
Explanation:
I haven't read Fahrenheit 451 in a very long time, but I do remember this part. I think a possible reason as to why the author does this is to start creating conflict and introduce the real turning point of the story, when we find out what the real problem is. Hope this helped.