Daily activities such as fertilizer use and pet waste contribute to nonpoint source pollution by introducing which into waterways?

Daily activities such as fertilizer use and pet waste contribute to nonpoint source pollution by introducing which into waterways?

• A. Nutrients and Bacteria
• B. Inert Sediments
• C. Heavy Metals
• D. Radioactive Isotopes

Answer: (A)

Daily activities like using fertilizer and picking up after pets introduce two main types of pollutants into waterways: nutrients and bacteria. Fertilizers contain nitrogen and phosphorus, which wash off lawns and into streams after rain. These nutrients fuel algae growth, leading to algal blooms that can deplete oxygen in the water and harm aquatic life. Pet waste adds bacteria and other microbes that contaminate water, raising health concerns for people and wildlife. Together, these diffuse sources exemplify nonpoint source pollution because they come from many small, scattered inputs rather than a single discharge point. The other options don’t fit these everyday sources as directly. Inert sediments stem mostly from erosion and soil movement, not the nutrient-rich runoff from fertilizer or the microbial load from pet waste. Heavy metals and radioactive isotopes typically enter waterways from industrial processes, mining, or specialized pollutant sources, not routine household activities.

Daily activities like using fertilizer and picking up after pets introduce two main types of pollutants into waterways: nutrients and bacteria. Fertilizers contain nitrogen and phosphorus, which wash off lawns and into streams after rain. These nutrients fuel algae growth, leading to algal blooms that can deplete oxygen in the water and harm aquatic life. Pet waste adds bacteria and other microbes that contaminate water, raising health concerns for people and wildlife. Together, these diffuse sources exemplify nonpoint source pollution because they come from many small, scattered inputs rather than a single discharge point.

The other options don’t fit these everyday sources as directly. Inert sediments stem mostly from erosion and soil movement, not the nutrient-rich runoff from fertilizer or the microbial load from pet waste. Heavy metals and radioactive isotopes typically enter waterways from industrial processes, mining, or specialized pollutant sources, not routine household activities.