How does ground water pulluted?

What are facts about the Asian forest scorpion? How can a material be porous but also impermeable? What is an organism that cant produce its own food called? Why can arsenic replace phosphorus? Is the Mariana trench convergent divergent or transform? Why put pebbles on gravestones? How often do tornadoes hit Florida? After a mixture of iron and sulfur are heated and then cooled a magnet no longer attracts the iron How would you classify the resulting material? What type of bond occurs when calcium atoms react with oxygen atoms? How can soil erotion be prevented? What kind of weather conditions will cause the most water to evaporate from the sea? Can you see a tornado when it is heavy rain fall? What is the luster of tungsten? Porosity is the amount of pore space in soils. Permeability is the ability of water to pass through the soil. Why do some soils have high porosity but low permeability? What city do hurricanes strike most? Why does it get colder the further you are from sea level? Is silicon acidic or basic? How groundwater forms caves? What are the advantages of a local catchment? What is the thickness of the stratosphere?

How does ground water pulluted?