A prolonged drought can lead to trees dying. The loss of vegetation can lead to the exposure of dry and bare soil. The soil can then become more easily eroded. The erosion may lead to dust storms and further erosion. The greater amount of erosion may lead to more vegetation loss, and so on. The above is an example of
A) Positive feedback.
B) Negative feedback.

Question

Quizplus · Accepted Answer

This is an example of positive feedback because the process amplifies itself: the initial condition (drought) leads to a series of events (vegetation loss, soil erosion, dust storms) that further exacerbate the initial condition, creating a cycle that intensifies the situation.

A Prolonged Drought Can Lead to Trees Dying