Pollution from industrial waste, agricultural runoff, and sewage discharge is a major factor contributing to the degradation of rivers and lakes.

While rivers and lakes can contribute to economic development through tourism and recreation, their primary benefits lie in ecological and environmental aspects.

River and lake restoration involves a range of activities aimed at restoring the natural functions and ecological integrity of these water bodies.

While dams and levees can be used for flood control and water management, they can also have negative impacts on river and lake ecosystems.

Eutrophication is caused by an excessive influx of nutrients, particularly nitrogen and phosphorus, which leads to algal blooms and a decline in water quality.

Bogs are typically found in cooler climates and are not directly associated with rivers and lakes.

The hydrologic cycle is the continuous movement of water on, above, and below the surface of the Earth.

Thermal pollution is primarily associated with industrial activities and refers to the discharge of heated water into water bodies.

Water treatment encompasses a range of processes to remove contaminants and make water safe for drinking and other uses.

Wetlands are not typically used for agriculture, but they provide a range of ecological benefits.

Water management involves the planning, development, and implementation of strategies to ensure the sustainable use of water resources.

Riparian refers to the area adjacent to rivers and lakes, not a type of ecosystem.

Wetland restoration involves a range of activities aimed at restoring the natural functions and ecological integrity of wetlands.

Natural disasters are not a type of water pollution caused by human activities.

Water management involves the planning, development, and implementation of strategies to ensure the sustainable use of water resources.