Which of the following geologic materials would have the highest groundwater velocities and be least effective in removing unwan
ted pollutants from the water? A. limestone; numerous solution channels and fractures widened by dissolution
B. sandstone; well-cemented with a few, widely spaced vertical fractures
C. unconsolidated medium-grained sand; sand grains are coated with clay minerals
D. lakebeds; unconsolidated very fine-grained sand and silt
Ex. The Population Will Increase If The Trend Continues and When The Population Reaches The Dark Shading, Then That's Over Populated and Means People Are Gonna Need More Food To Stay Alive and So The Population Can Keep Growing.
