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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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tthomp96 tthomp96
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5 years ago
Which of the following best describes steam powered airplanes?
A) They were widely used until the 1970s, when jet fuel prices made other engines more efficient.
B) They are impractical because of the low power-to-weight advantage.
C) They were used for commercial air travel but were discontinued because of safety regulations.
D) They are under development and are expected to be the next phase of jet technology.
Textbook 
Environmental Science: Toward A Sustainable Future

Environmental Science: Toward A Sustainable Future


Edition: 13th
Authors:
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fnce445fnce445
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5 years ago
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tthomp96 Author
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5 years ago
Smart ... Thanks!
dri
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
Goku935
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2 hours ago
Thanks
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