Water that comes up positive after fecal coliform testing indicates health risks most commonly associated with
A) infection by E. coli.
B) heavy metals and toxic organic molecules.
C) radon and other radioactive materials.
D) a variety of pathogens in human sewage.
D
You might also like to view...
The process by which ____________________ obtain their energy is photosynthesis
Fill in the blanks with correct word
Along a reverse fault, the________ wall moves downward relative to the ________ wall.
A. foot; hanging B. foot; normal C. hanging; foot D. hanging; reverse
Conservation of natural habitats such as oyster beds and coral reefs have been explored as a defense against ________
A) economic crisis B) saltwater intrusion C) aquifer drawdown D) storms E) flooding
Over time, which of the following has happened to Niagara Falls?
A) They have become rapids. B) They have migrated several kilometers upstream. C) They have migrated several kilometers downstream. D) They have drained away most of Lake Ontario's water. E) They have evolved into the world's most famous example of stream capture.