<span>the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.</span>
Answer:
Speed matters in volleyball because players are required to move quickly in multiple directions throughout the entire game. And coordination is important it plays a key role in digging and spiking the ball.
Answer:
biological, chemical and physical.
T cells attack antigens on foreign substances and B cells produce antibodies.
Answer:
The conditions can lead to chronic bronchitis.
Explanation:
The lungs airways like bronchial tube become inflamed and causes symptoms like coughing can lead to a condition called bronchitis. The severe form of the condition can cause acute form to chronic bronchitis. The person suffers from acute bronchitis recovers their health within few days. This can be caused by viral infections. The cough for months is a sign of chronic bronchitis. It takes years to recover. the inflammed linning of passage of lungs releases excess mucus. Smoking is a major cause of chronic bronchitis in men.
