What is the least expensive and most effective way to protect groundwater?
A. Pump it to the surface, clean it, and return it to the aquifer.
B. Inject microorganisms to clean up contamination.
C. Pump nanoparticles of inorganic compounds to remove pollutants.
D. Use methods to prevent contamination.
E. Use bottled water as a substitute.
Answer: D
You might also like to view...
What type of organisms live in soil?
A) Earthworms B) Insects C) Bacteria D) Vertebrates E) All of these choices are correct.
After a uranium fuel rod reaches the end of its fuel cycle (typically 3 years) most of its energy comes from the fissioning of plutonium because
A) fissionable Pu-239 is formed as the U-238 absorbs neutrons from the fissioning U-235. B) fissionable Pu-239 is formed as the U-235 absorbs neutrons from the fissioning U-238. C) fissionable Pu-239 is formed as the U-238 absorbs alpha particles from the fissioning U-235. D) fissionable Pu-239 is formed as the U-235 absorbs alpha particles from the fissioning U-238.
During the Japanese Tsunami, the seafloor was thrust up 5 m to 8 m (16 feet to 26 feet).
Answer the following statement true (T) or false (F)
Which of the following sites in South America would be best for generating electricity from solar energy, if clouds were NOT a factor?
A. a site near the equator, such as the Galápagos B. a site at high latitudes (very far south in this case) C. Ushuaia, near the southern tip of the continent