Part 1 Please discuss the roles of positive and negative feedback in maintainin

Part 1
Please discuss the roles of positive and negative feedback in maintaining homeostasis, and give one example of how positive or negative feedback played a role in maintaining your own homeostasis.(150 words minimun)
Part 2
Please discuss the beneficial roles of cholesterol in the human body, and why cholesterol is required for human health. Also discuss how cholesterol plays a role in cardiovascular disease. (150 words minimum)