A negative feedback loop is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus. Often, it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostasis, as in biology, or equilibrium, as in mechanics.
The United States. All the answers above are technically correct. Lincoln signed off on all of the U.S. The other answers just include parts of the U.S. instead of the whole :)
D. Eugene Talmadge
(I'm assuming this is the same question I had, if not, sorry... you should've written the entire question with the answer choices)
