The answer to your question is D. <span>. to protect students who cannot be vaccinated with herd immunity</span>
Answer:
B. Positive feedback
Explanation:
The positive feedback or positive feedback mechanism occurs in smaller quantities compared to the negative feedback mechanism. Positive feedback, unlike negative feedback, ensures increased stimulus that causes imbalance, reinforcing it. Thus, positive feedback is not always beneficial, triggering, in some cases, detrimental effects on the body.
Although less than negative, positive feedback also plays an important role in our bodies. An example of this occurs when platelet release chemicals are activated in an injured tissue to attract more platelets, eventually forming a blood clot.
During an aerobic workout, you depend on liver glycogen to keep your blood sugar levels steady. With full liver glycogen stores, a less fit athlete will run out of glycogen after one hour and 45 minutes of exercise. Once liver glycogen is gone, your blood sugar levels drop and your workout or event is negatively affected.
A. would be the correct answer
