Wetland Function Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.Wetlands contribute to the stability of the environment in multiple ways, preventing flooding by holding water; filtering and purifying surface water; and, surprisingly, release vegetative matter which helps feed fish in the rivers. filtering and purifying surface water; and, surprisingly, release filtering and purifying surface water; and, surprisingly, releasing filtering and purifying surface water; and they surprisingly release they filter and purify surface water; and surprisingly release they filter and purify surface water; and, surprisingly, releasing Review Answer