1) Why are frogs considered to be "indicator" organisms (e.g. signal poor environmental conditions)? - They are extremely sensitive to cranges in The envirument 3 can give scientific valuable insight into how an ecosystem is functon ing 2) List three reasons mentioned causing recent declines of frog populations across the world: 1) 2) 3) 3) What actions are being taken for each of the reasons listed in 12 to reverse the declines? 4) How does the chytrid fungus cause death in frogs? 5) How can frogs benefit human health? 6) What is the role of frogs in the ecosystems in which they live? 7) For successfully introducing cured frogs back into the wild, what must be necessary?.