Final answer:
The passage from Silent Spring presents an idyllic town in harmony with nature, using positive tone to evoke a sense of loss for what once was and to underscore the importance of environmental preservation.
Step-by-step explanation:
The passage from Rachel Carson's Silent Spring describes a town that appears to be existing in harmony with nature. The subject/topic of this passage is the idyllic and harmonious relationship between a town and its natural environment. Words that convey tone about the town include 'harmony,' 'prosperous,' 'white clouds of bloom,' 'green fields,' 'blaze of color,' 'flamed,' and 'flickered,' all of which contribute to a positive tone. Based on this tone, we can conclude that the town was once a place of environmental bliss and symbiosis. It reflects an idealized image of nature, invoking a sense of peace and balance. This tone is likely used by the author to contrast with the destructive consequences of pesticide use, which is the central theme of Silent Spring, to evoke a sense of nostalgia and loss for what once was, ultimately serving a persuasive purpose to raise awareness about environmental degradation.