Which of the following is true about the effects of runoff? A. Organisms over- compete for the same resource B. Organisms are 'run off their native ecosystem by parasites. C. Runoff prevents the conversion of energy to biomass.​

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

your answer is going to be physical weathering