Discuss the probability density function for century-scale changes in global temperature during the holocene up to 1900 and compare this to the pdf for changes in the 21st century.

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.

Since wxyz is 4, halfof that would be 2.