Groundwater as a water source may be better than surface water because
A) groundwater may be naturally purified by percolation through soil.
B) groundwater is a self-replenishing resource that cannot be exhausted.
C) surface water is not naturally self-replenishing.
D) groundwater is more easily located than surface water.
Question 2
Some of the most toxic organic compounds, widely used in plastics, pesticides, and solvents, are the
A) heavy metals.
B) chlorinated hydrocarbons.
C) sulfated hydrocarbons.
D) radioactive hydrocarbons.
Coolant circulates through the water jackets in the engine block and cylinder head.
Water transport in plants
Carbon Monoxide and Water Molecules Interaction
Water and Body Fluids
The water cycle
Micrograph of toothbrush bristles scrubbing plaque on a tooth surface.