How can parasitism, commensalism, and mutualism relationships be disrupted by an abiotic factor? For example, how can a fish and a leach be affected by an abiotic factor?
Abiotic means things that aren't living. There are a number of abiotic conditions that could impact fish and leaches. Certain fish and leaches can only live in water of the correct temperature and salinity. If you altered the temperature or salinity how might that impact the fish? How could it impact the leach? If one of those is harmed how might it impact the other species?