At one time, the US government collected taxes only through taxes and imports.
The
Amendment to the Constitution allowed the federal government to collect taxes on income.

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.

Ihave no idea what the answer is

Since wxyz is 4, halfof that would be 2.