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what is the difference between mood and tone

The reversalists continue their labors, confident that they will one day construct an engine that generates more compression than it uses, a perpetual power source that will restore to the universe its lost vigor. which theme is best supported by the excerpt? a. scientific study requires dedication and perseverance. b. people will always look for a way to achieve immortality. c. death must always be endured alone. d. change is difficult to accept but beneficial if embraced.

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Which is expressed with the least redundant language? a) she will love her dog forever and ever. eliminate b) my appointment is at 3: 00 p.m. in the afternoon. c) any topic you choose for research must be manageable. d) there are seven students who have applied for admission to the art class.