Over-Reliance on Fossil Fuels for Some Industries Can Lead to Which

Multiple Choice

Over-reliance on fossil fuels for some industries can lead to which of the following?

A) Firms can operate, on average, at an energy efficiency level far less than the theoretical
thermodynamic potential.
B) Firms can operate, on average, at an energy efficiency level far higher than the theoretical
thermodynamic potential.
C) Decreases in atmospheric oxygen levels.
D) Both "a" and "b".
E) Both "b" and "c".