What is the key concept for this section? Define and give an example of a system. Distinguish among the inputs, flows (throughputs), and outputs of a system. What is feedback? What is a feedback loop?...

What is the key concept for this section? Define and give an example of a system. Distinguish among the inputs, flows (throughputs), and outputs of a system. What is feedback? What is a feedback loop? Distinguish between a positive feedback loop and a negative (corrective) feedback loop in a system, and give an example of each. What is an ecological tipping point?