If You Collect a Jar of Muddy Water from a Puddle

question 6

Multiple Choice

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.