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Questions and Answers
What covers three-fourths of the planet?
What powers photosynthesis, supporting almost all life-forms on Earth?
What develops from rock and provides support and minerals for plants?
What type of organisms require essential oxygen and carbon dioxide?
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How long has life existed on Earth?
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What hindered mass adoption of private electric vehicles throughout the 20th century?
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Which propulsion mechanism dominated cars and trucks for about 100 years?
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In which types of vehicles did electricity-powered locomotion remain commonplace?
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What advantage did electricity provide for motor vehicle propulsion, compared to gasoline engine cars of the time?
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What hindered the mass adoption of private electric vehicles throughout the 20th century?
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