Question

how do wetlands act like kidneys? *
the plants in them exchange carbon dioxide for oxygen
they stabilize the ph of the ecosystem
they serve as breeding grounds for many species
they prevent the build - up of gill clogging silt
they filter water for impurities before the water leaves

Explanation:

Kidneys filter blood. Wetlands filter water. Just as kidneys remove impurities from blood, wetland plants and soil filter water, removing sediments, nutrients, and pollutants before the water leaves the wetland.

Answer:

They filter water for impurities before the water leaves