Algal biofuels are considered viable alternatives to land-based crops such as corn and soybeans because ________.
A. algae do not compete with food production
B. algae can be grown on wastewater
C. growing algae does not require farmland
D. All of these choices are correct.
E. None of these choices is correct.
Answer: D
You might also like to view...
All of the following are criteria used by the U.S. Department of Transportation to determine if it is a hazardous material EXCEPT
A. any poisonous or toxic materials. B. any explosive materials. C. any gases. D. any flammable materials. E. any liquid materials.
Cattle serve no useful function in India
Indicate whether the statement is true or false.
In the United States, about 4.7% of our land is set aside as protected wilderness. The vast majority of that land is in Alaska, which accounts for ____________of the total
a. 80% b. 75% c. 50% d. 45% e. Actually of the protected wilderness land in the U.S. is in Alaska
Ancient current directions can be determined by:
a. wave-formed ripple marks. b. cross-bedding. c. graded bedding. d. mud cracks. e. all of the above