Answer:
Alligators is independent variable and the impact on ecosystem is dependent variable.
Step-by-step explanation:
Alligators is independent variable and the impact on ecosystem is dependent variable. The environment having alligators is a balance ecosystem because alligators feeds on some organisms to control their population while on the other hand, the environment which have no alligator is not in equilibrium state because some organisms increase in population and become invasive species that cause damage to other organisms so environment having alligators is good as compared to no alligators.