Answer:
Fuel Efficiency
Explanation:
Other answers: Less Pollutions, Compostability
B) it provides comic relief at a tense moment
Answer: read sabotreur what roles does the professor play, what's is job, his personality and things he does,then you look in the story to prove your answer.
Explanation: example I might say the professor his generous Details 1 he help and give back to to world, details 2 he saw and old lady struggling he drop his work to assist her, details 3 he have the little boy money to buy food for himself. This is an example I have not read the story yet.
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