Respiratory system and the cardiovascular system
Answer:
breakdown of a substance by bacteria, yeasts, or other microorganisms
Explanation:
If the predator that feeds off the dart frogs goes extinct or migrates to a different area then the dart fronts will have a much larger population. This means that the resources the dart frogs rely on will start to deminish and their prey will have smaller numbers
Oh thats pretty simple that is a gastroenterologist
