Walls built perpendicular to the beach in pairs at the entrances to inlets and extending slightly out into the ocean to keep the inlet open are called

a. jetty
b. groin
c. breakwater
d. seawall

I think its seawall but not sure about the answer

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.