AP Environmental Scienceeasymcq1 pt
EROEI (energy return on energy invested) measures
A.usable energy gained per energy spent obtaining it
B.a power plant's pollution level
C.electricity prices
D.a country's total energy use
Explanation
Core Concept
A high EROEI (like conventional oil historically) means cheap net energy; falling EROEI means each joule costs more to get.
Correct Answer
Ausable energy gained per energy spent obtaining it
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