On a large urban or industrial scale, biogas can be produced
A) by using crushed fresh corn in an aerobic tank.
B) from municipal wastewater treatment, landfills and food waste.
C) using enzymes to degrade cellulose to glucose and then fermenting.
D) drilling into areas adjacent to petroleum deposits.
B
You might also like to view...
The shape of Earth's magnetic field resembles
A) a bar magnet. B) a horseshoe magnet. C) an elliptical magnet. D) a spherical magnet.
The arrival of a cold front brings:
A) gentle rains. B) cumulonimbus clouds. C) mild weather. D) higher temperatures. E) stationary winds.
He Great Artesian Basin, the world's largest groundwater aquifer, is found in which country?
A) New Zealand B) Australia C) Papua New Guinea D) Tahiti E) Hawai'i
One of the reasons that it is difficult to restore an oak savanna is that
A. Too many trees are cut down illegally for their timber value B. There are no natural fires to control vegetation due to human development of the areas C. Too many wild animals destroy the bark of the trees D. Too many weedy species take over the oak saplings E. There is not enough suitable land remaining