The maximum heart rate is calculated by removing the given age from 220. In this case, we are given 15 as the value for age. So, we have: 220 15 = 205.
To calculate the heart rate range, we have to calculate for three zones:
Zone 1= Maximum heart range * 0.6 = 205 * 0.6 = 123.
Zone 2 = Maximum heart range * 0.7 = 205 * 0.7 = 143.5.
Zone 3 = Maximum heart range * 0.8 = 205 * 0.8 = 164.
Therefore, the heart rate range = 123 - 164.
Thus, the correct option is B.
Chemical reactions are the result of an atom attempting to result in a complete outer shell or have a stable octet.
Inhalation is the process that allows air to enter the body while exhalation allows air out of the body. During inhalation, the diaphragm and the rib muscles contract, increasing the volume of the lungs. Air enters the nose or the mouth and flows down the trachea, bronchi, and bronchioles and into the alveoli. On the other hand, during exhalation, the diaphragm and the rib muscles relax, decreasing the volume of the thoracic cavity, Air leaves the alveoli and flows up the bronchioles, bronchi, and trachea and exits through the nose or the mouth.
Organizing sentences around a central idea is called a paragraph.
Answer: a,b,d
Explanation: I have faith
and also they fall in order
