Feedback is a type of feedback in which a system is triggered to produce an output.

Positive feedback is a type of feedback in which a system is triggered to produce an output.

Positive feedback is a feedback in which the end products of the process (reaction) cause more of that to occur.  

Each feedback loop contains:

•Stimulus-something that disrupts the homeostasis

•Sensor-detects the change

•Control center- responds to the change

•Effector- responds to the stimulus.

The answer is positive.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands