What is a positive feedback loop? a) something that carries out a response
b) the output of a system stimulates another cycle of the system
c) a closed path that tends to reduce the activity of a body system
d) anything that causes a reaction or response

D

Explanation:

it is a process that occurs in a feedback loop which exacerbates the effects of a small disturbance

The output of a system stimulates another cycle of the system

Explanation:

This happens when the effect of a pathway is picked up by the sensor and the sensor tells the system to start the pathway over again.

it's c. (to reduce the greenhouse effect/carbon gasses)

what bodys are there orbiting?