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 crusades were considered a turning point in history because the pope urban 2 wanted the christians to fight the muslims so that they could have back the control over the holy lands
Barrier islands serve as the first protection for the mainland. They take the first hit and slow down the hurricane/reduce impacts. Because of this, lack of barrier islands would cause the mainland to be flooded even more, which would cause land loss.
Because there was an HIV/AIDS outbreak, and due to being a Republican administration, they had absolutely no idea how viruses or the human body worked. The CDC did.
