Question

question 4 of 16 classify each listed aspect of the nutrient pollution problem as a cause, consequence, or solution. cause consequence solution answer bank reduced commercial fishery revenues runoff from urban areas restoration of upstream wetlands over fertilization of crops point source wastewater discharges point source discharge limitations reduced fertilizer application human illness

Explanation:

To solve this, we analyze each item based on its relation to nutrient pollution (cause: what leads to it; consequence: result of it; solution: action to fix it):

Cause (factors leading to nutrient pollution):

• runoff from urban areas: Urban runoff carries nutrients (e.g., from fertilizers, sewage) into water bodies.
• over - fertilization of crops: Excess fertilizer (nutrients like N, P) can runoff into water.
• point source wastewater discharges: Wastewater (with nutrients) from specific sources (e.g., factories) enters water.

Consequence (results of nutrient pollution):

• reduced commercial fishery revenues: Nutrient pollution causes algal blooms, hypoxia, etc., harming fish populations, so fisheries earn less.
• human illness: Contaminated water (from nutrient - driven pathogens/toxins) causes diseases.

Solution (actions to reduce nutrient pollution):

• restoration of upstream wetlands: Wetlands filter nutrients from runoff, reducing pollution.
• point source discharge limitations: Regulating wastewater discharges reduces nutrient input.
• reduced fertilizer application: Using less fertilizer means less nutrient runoff.

Final Classification:

• Cause: runoff from urban areas, over - fertilization of crops, point source wastewater discharges
• Consequence: reduced commercial fishery revenues, human illness
• Solution: restoration of upstream wetlands, point source discharge limitations, reduced fertilizer application

Answer:

To solve this, we analyze each item based on its relation to nutrient pollution (cause: what leads to it; consequence: result of it; solution: action to fix it):

Cause (factors leading to nutrient pollution):

• runoff from urban areas: Urban runoff carries nutrients (e.g., from fertilizers, sewage) into water bodies.
• over - fertilization of crops: Excess fertilizer (nutrients like N, P) can runoff into water.
• point source wastewater discharges: Wastewater (with nutrients) from specific sources (e.g., factories) enters water.

Consequence (results of nutrient pollution):

• reduced commercial fishery revenues: Nutrient pollution causes algal blooms, hypoxia, etc., harming fish populations, so fisheries earn less.
• human illness: Contaminated water (from nutrient - driven pathogens/toxins) causes diseases.

Solution (actions to reduce nutrient pollution):

• restoration of upstream wetlands: Wetlands filter nutrients from runoff, reducing pollution.
• point source discharge limitations: Regulating wastewater discharges reduces nutrient input.
• reduced fertilizer application: Using less fertilizer means less nutrient runoff.

Final Classification:

• Cause: runoff from urban areas, over - fertilization of crops, point source wastewater discharges
• Consequence: reduced commercial fishery revenues, human illness
• Solution: restoration of upstream wetlands, point source discharge limitations, reduced fertilizer application