If you collect a jar of muddy water from a puddle or ditch and then let the mud settle out over many hours, you have separated much of the mud from the water using a process very much like the
A) grit chamber in a wastewater facility.
B) primary treatment in a wastewater facility.
C) secondary treatment in a wastewater facility.
D) trickling-filter system in a wastewater facility.
B
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How do caves and caverns form in limestone?
What will be an ideal response?
If you were looking for graded beds, where would be a good place to look?
A. just offshore of a sediment-poor beach B. in the center of an atoll C. in a submarine fan D. in a warm and shallow lagoon E. None of these choices are correct.
In the thermohaline circulation systems, surface water is ________
A) saltier and colder B) less salty, less dense, and warmer C) driven by winds from north to south D) warm and dense E) cold and dense
What is a possible extraterrestrial origin for a tsunami?
A. Excessive sunspot activity B. Pull of the Sun's gravity C. A meteorite impact D. A neutron shower