Freshwater native mussels are a keystone species. They keep the harmful bacteria and algae populations from exploding in addition to improving water quality through filtering. A different species of mussels has invaded this river ecosystem. Reviewing the graph above, how has the presence of the invasive mussels affected the population of native mussels? (1 point) Due to interspecific competition, the population of native mussels has decreased. Due to interspecific competition, the population of native mussels has increased. Due to intraspecific competition, the population of native mussels has decreased. Due to intraspecific competition, the population of native mussels has increased.
