Answer:
A. Negative feedback mechanism
Answer:
O B. Hierarchical power structures
Explanation:
In the past, there were a multitude of ads that advertised the benefits of smoking and how it can actually lengthen one's lifespan. Not only did those ads promoted excessive usage of tobacco, but they also influenced children and teens in a way that lead to addiction and prematured deaths.
Push-ups can increase your muscles in your shoulders, chest, and possibly your core(the middle section of your body).
