An Example of a Positive Feedback Loop ______________

An example of a positive feedback loop ______________

A) is melting arctic snow exposing dark surfaces that heat up and cause further melting
B) is a thermostat turning on the furnace as the temperature drops
C) are birds migrating south in response to colder temperatures
D) are predators eating most of their prey and then declining in numbers
E) is a pond becoming more acidic as a result of pollution