Destruction of wetlands is an effect. what is one of its causes?

Answer: Human activities cause wetland degradation and loss by changing water quality, quantity, or flow rates; increasing pollution and change the make-up of species within a habitat. These changes occur when wetland ecosystems are disturbed and/or non-native species are introduced to a habitat.

One cause of the destruction of wetlands is flooding. The water erodes the land and destroys the habitat.