<span>True, the average menstrual cycle does indeed last around 28 days. This varies between women, however, and can range from between 21 and 35 days after puberty. The menstrual cycle is controlled by fluctuating hormones in the female body.</span>
<u>Answer:</u>
Mouth to mouth respiration during CPR (cardiopulmonary resuscitation) is given if the person is responding to chest compression.
Option: (C)
<u>Explanation:</u>
- Chest compression occurs when the person stops breathing. So, if the person shows the sign of chest compression then one should immediately start the mouth to mouth respiration.
- Though there is less chance for the patient to get conscious but it is the best technique available.
- Whether the person is child or adult, we must apply the CPR for the chest compression case to save their life in case of emergency.
the vital capacity of an athlete is higher than a non-athlete because they are trained to do hard work, their lungs get bigger over time and make it easier for them to take long breaths when they are running or doing any other exercise
