sentences:  Though the frogs have suffered some decline in past years, which can be blamed on a fungal disease, their numbers have come back stronger.The fungal disease that is believed to be the cause of a decline in the 1990s is called Chytridiomycosis.An infectious disease that has affected amphibians worldwide, Chytridiomycosis is caused by a fungus that causes sporadic deaths in some amphibian populations, as well as 100% mortality rates in others.