I think it would benefit the people in the community, because they are getting money to help other people that might need their organs after they die. This provides a benefit of money to the donor, and possibly a lifesaving organ to the donation receiver.<span />
The first one: Saturated fats
Second one: unsaturated fat
Third one: lipoprotein
Fourth one: cholesterol
(Second and fourth one not sure)
Maintenance of homeostasis is in a negative feed back loop because if the tempature gets too high the negative feedback loop acts to bring it back down.
The correct answer is: Baroreceptors in the arteries send a signal to the brain that the blood pressure is low. The brain sends a chemical signal to the heart to increase its rate of pumping. This continues until the baroreceptors sense a normal blood pressure.
A negative feedback loop occurs in the body when something in the body has decreased in function, which could mean high or low, for example blood sugar, body temperature or in this in this case blood pressure. It then creates a feedback loop to tell that part of the body to regulate itself and return the body to a state of homeostasis (which is your optimal internal state). In a negative feedback loop the response of the regulating mechanism is opposite to the output of the event. So if blood pressure is low the negative feedback loop will tell the body to increase the pressure.
A positive feedback will result in more of a product: more prolactin, more contractions, or more clotting platelets.
