More and more instruments found on a tray are becoming expendable because of the greater awareness and concern about transmitting infectious diseases. list and explain two positive and two negative aspects of using expendable items.

The two positive aspects of using expendable items is their safety and lower costs. It is true that these items are greatly used because of the concern of transmitting infectious disease, after all; life is precious and being disposable, it guarantees safe to use. Another aspect is that, it comes with lower costs that will make their availability possible.  

However, the negative aspects of expendable things is the long term expenses that can cut off bigger profit. Aside from that, it requires more attention because they are frequently used and basically one should not run out of it.

wellness is an overall state of well-being. the quality or state of being healthy in body and mind, especially as the result of deliberate effort

b) the heart is a pump made of muscle and that is difficult to grow in the lab.