Sewage Sludge, the Solid That Remains After Aerobic Decomposition, Makes

question 16

Multiple Choice

Sewage sludge, the solid that remains after aerobic decomposition, makes a useful fertilizer because

• A)it is rich in nitrogen, phosphorus, and potassium.
• B)it contains significant energy in the form of methane.
• C)it has been treated to remove microbes and will not be a source of pathogens.
• D)it is rich in carbon and nitrogen.

---

Definitions:

Squatter Settlement

An area of unauthorized or informal housing, often lacking basic services, created by people with nowhere else to live.

Developing Countries

States that have a lower standard of living, less developed industries, and a lower score on the Human Development Index compared to other countries.

Environmental Benefit

Positive effects or outcomes on the natural environment, including improved air and water quality, biodiversity preservation, and ecosystem resilience.

Urbanization

The process by which towns and cities are formed and become larger as more people begin living and working in central areas.