Review the map below, which shows the population of the world in people per square kilometer. What two regions show the highest population density? Select one:
a. North and South America
b. the Middle East and Australia
c. Western Europe and South Asia
d. Western and Eastern Europe

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.

I’m confused ///: : : :

Answer were lower;