Answer: The human body is designed to experience stress and react to it. Stress can be positive ("eustress") -- such as a getting a job promotion or being given greater responsibilities -- keeping us alert and ready to avoid danger. Stress becomes negative ("distress") when a person faces continuous challenges without relief or relaxation between challenges. As a result, the person becomes overworked and stress-related tension builds.
Explanation:
I think the answer is control of the heart and lungs but i might be wrong
Answer:
1. Ecological Changes and Agricultural Development
2. Changes in Human Demographics and Behavior
3. International Travel and Commerce
4. Technology and Industry
5. Microbial Adaptation and Change
<h2>hope this helps</h2>
Explanation:
