Function
In the vicinity where the three ice lobes began to retreat, sits the recharge areas that allow surface water to enter back into the ground source. The speed of absorption depends on the density of aquifers and aquitards. Aquifers are made up of sand, gravel and silt where the water filters down relatively quickly. The shallow aquifers feed area bodies of water such as creeks and streams while the deeper aquifers feed down to replenish the ground water. The aquitards are the protective layers of clay that slowly filters the water and act to protect the main source from contamination. Left on its own, it is a naturally renewable way to gather fresh drinking water.
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Famous quotes containing the word function:
“The mother’s and father’s attitudes toward the child correspond to the child’s own needs.... Mother has the function of making him secure in life, father has the function of teaching him, guiding him to cope with those problems with which the particular society the child has been born into confronts him.”
—Erich Fromm (1900–1980)
“No one, however powerful and successful, can function as an adult if his parents are not satisfied with him.”
—Frank Pittman (20th century)
“The uses of travel are occasional, and short; but the best fruit it finds, when it finds it, is conversation; and this is a main function of life.”
—Ralph Waldo Emerson (1803–1882)