Describe saltwater incursion. What methods are used to counteract saltwater incursion? What will be an ideal response?
The excessive pumping of groundwater in coastal areas results in saltwater incursion. When freshwater
is pumped from an aquifer that is in contact with the ocean, the seawater is pulled into the aquifer. The
fresh groundwater is less dense than the seawater and forms a lens-shaped body above the underlying
saltwater. A deep cone of depression may form in the fresh groundwater, and the saltwater may form a
cone of ascension to fill the pore spaces that formerly contained freshwater. The wells remain
contaminated with saltwater until freshwater recharge refills the aquifer.
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Primate cities are found in the world's
A) core countries. B) peripheral countries. C) core and peripheral countries, both. D) North. E) South.
________ refers to warm air at the surface being cut off by the meeting of two cold fronts
Fill in the blank(s) with the appropriate word(s).
Which of the following IUPAC names is incorrect?
A) methylcyclohexane B) cis-1,4-dimethylcyclohexane C) cis-1,1,2-trimethylcyclohexane D) none, they are all correct
What is the term for when one lithospheric plate slides beneath another lithospheric plate?
a- Divergence b- Accretion c- Isostacy d- Subduction