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

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

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.