Question

select the correct answer. which scenario is an example of a negative feedback loop? a. when body temperature increases, sweat is produced as a cooling agent to lower body temperature. b. in some parts of the world, birth rates are far exceeding death rates, which has led to overpopulation. c. ice reflects sunlight much better than water. a warmer atmosphere is turning ice to water, which is absorbing more of the suns energy. d. a warmer atmosphere is leading to warmer oceans. a warm ocean releases more carbon dioxide, which traps more heat in earths atmosphere.

Explanation:

A negative - feedback loop is a process where a change in a variable triggers a response that counteracts the initial change. In option A, an increase in body temperature (variable change) leads to sweating which cools the body (counter - acting response). Options B, C, and D are examples of positive feedback loops or non - feedback related processes. In B, there is no self - regulating counteraction. In C and D, changes lead to further amplification of the initial change.

Answer:

A. When body temperature increases, sweat is produced as a cooling agent to lower body temperature.