Multiple Choice
A septic system is _________________
A) an early version of a wastewater treatment plant
B) the use of natural wetlands to cleanse wastewater
C) a second level mechanism to remove bacteria at a wastewater treatment plant
D) a toxic or badly polluted waterway
E) a rural method of processing wastewater
Correct Answer:

Verified
Correct Answer:
Verified
Q22: One -fifth of Earth's total freshwater supply
Q23: Describe the benefits obtained by the creation
Q24: Only about 2.5% of all the water
Q25: Recent research that analyzed the content of
Q26: Use the Three Gorges Dam on China's
Q28: Emergent vegetation such as cattails and reeds
Q29: The fish in the lake at the
Q30: What is the main argument against removing
Q31: Dam removal in the U.S._<br>A)will probably increase
Q32: Levees are used _<br>A)to prevent flooding and