Contaminated Groundwater Cannot Cleanse Itself.Why

question 85

Multiple Choice

Contaminated groundwater cannot cleanse itself.Why?

• A) Groundwater does not move at all and contaminants are not dispersed effectively.
• B) Groundwater does not move at all and lower concentrations of dissolved oxygen exist for decomposition.
• C) Contaminants are not dispersed effectively and lower concentrations of dissolved oxygen exist for decomposition.
• D) Groundwater does not move at all and cold temperatures usually slow down reactions.
• E) Contaminants are diluted easily,but not dispersed effectively.

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Definitions:

Erosion Surface

A land surface shaped and leveled by the natural removal of soil and rock, usually by water, wind, or ice.

Fragments

Small or broken pieces of something larger, often resulting from the physical breaking or destruction of an object or substance.

Tilted Layers

Geological strata that have been shifted from their original horizontal position, often as a result of tectonic forces, creating an angle with the horizontal.

Superposition

A principle stating that in an undisturbed sequence of rocks, layers of rock were deposited in order from bottom to top according to their age.