In a local lake, the black bass was over fished one year. The following year, there was a industrial pollution incident that killed off another large portion of the black bass. This led to the demise of black bass in this lake. As a result of human activities, what happen to the other fish species in the lake after the demise of the black bass? A) the other species became extinct B) numbers decreased when competition decreased C) numbers increased when competition decreased D) demise of black bass had no affect