Question: Scientists are experimenting to develop microbes that can live off surplus electricity and CO2 to produce
Choices:
text: organic products, such as methane, acetate and butanol as economic biofuels
label: A
text: less electricity and more CO2
label: B
text: solar energy and biofuels in the laboratory
label: C
text: fewer biofuels like butanol and less CO2
label: D
Answer: A