According to a 2002 study by scientists at the National Water-Quality Assessment Program (NAWQA), ________ % of U.S. streams contain traces of wastewater contaminants
A) 10 B) 80 C) 50 D) less than 1 E) 100
Answer: B
You might also like to view...
Which of the following is not a way that atoms achieve a full outer layer of electrons?
A) transferring electrons from an inner level B) sharing electrons with another atom C) transferring electrons to another atom D) gaining extra electrons from another atom
What are small molecules composed of multiple amino acids called?
A)monomers B)protobionts C)bacteria D)proteinoids E)DNA
Referring to Figure 14.7.2, North America uses ________ water per capita than any other region of the world. Figure 14.7.3 provides insight that this is primarily due to ________
A) less; industrial usage B) much more; industrial usage C) much more; agriculture D) less; agriculture E) much more; municipal usage
Speleothems are made when water evaporates into the cavern air, leaving behind deposits of calcium carbonate
a. True b. False Indicate whether the statement is true or false