B, because you can see when is the best time to work
Answer:
Explanation:
Cardiopulmonary resuscitation (CPR) acts as a manual heartbeat, keeping vital organs alive even after the heart has stopped beating.
Artificial External Defibrillator (AED) is an electronic device that is used to revive a person's heart when it has stopped beating.
Answer:
the study of the structure, reaction, and composition of different kinds of substances
Explanation:
The spleen plays an important role in the immune system, therefore when the spleen is no longer present the immune system weakens and can cause the affected to become more susceptible to illness/infection. Furthermore, the affects individual will have a harder time fighting the illness/infection than someone with a full immune system.
<span>Why are nutrients essential?
They play an important role in many body processes, are used to ensure our physiological needs, such as growth, development <span>and metabolism.</span></span>