Well... if the predator would become extinct, the population of the hunted will grow and reproduce. There for it would increase.
Answer:
windy, cold, long, constant(doesn't set), warmer
Explanation:
Predator and Prey relationships would have the most effect on an ecosystem's stability because they keep a limit number on the opposing population (ex. rabbit population can only get so high because wolves keep eating them / wolf population can only be so high because there is't enough rabbit to eat)