The presence of two or more unrelated disease conditions at the same time in the same person is referred to as "" psychopathology comorbidity multifinality equifinality

the answer is d (apex) good luck : ))

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

so whats the answer