Aquifers are a. located below the water table b. important sources of freshwater c. located in the saturated zone d. all of the above

d. all of the above, they are all true

The correct answer is d. all of the above.

An aquifer is an underground layer of sedimentary rock such as sandstone which bears water. Underground layer of water-bearing rock.  Water from rainfall and melting of snow percolates in the ground to fill aquifers. Thus, they are the storehouse of the underground water and is an important source freshwater. The top water level of aquifers are water table.  Water from aquifers used for drinking, agriculture and various industrial purposes.

the sphincter muscles at the end of the digestive tract is the anus.

the eggs of the insects should be the first thing collected at the scene.

false