Question

in lake elsinore we have which type of ecosystem wetland or riparian for water quality improvement?
riparian
wetland
coastal sage
aquatic lake

Explanation:

Riparian ecosystems are found along water - bodies like rivers and can play a role in water quality improvement. Wetlands are areas saturated with water and also help with water purification. Coastal sage is a type of vegetation and not directly related to the main water - quality - improving ecosystems in this context. Aquatic lake is a general term for the lake environment and not a specific ecosystem type for water quality improvement like wetland or riparian. Lake Elsinore has a riparian ecosystem which is important for water quality improvement due to its location along water channels and its ability to filter pollutants.

Answer:

Riparian