Limestone changes under great heat and pressure to form a. shale b. gnesis c. marble d. graphite

Lime stone under great heat and pressure changes to marble

A,) cause a & b are equal & both gives 180°

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.