Organisms undergo constant chemical changes as they maintain an internal balance known as

The correct answer is homeostasis.

Homeostasis refers to the process by which living organisms regulate and maintain normal and stable internal bodily functioning despite changes in external factors. Homeostasis regulates body temperature, energy levels, sleep wake cycles, etc. An example of homeostasis is when a healthy individual is able to maintain a normal body temperature of 98.6 degrees Fahrenheit by either producing heat (goosebumps) or cooling down the body (sweating) in extreme temperatures.

Well, l think that some effective communication is, emotional barriers and lack of attention, interest distraction or irrelevance. also some physical disabilities such as hearing problems or speech difficulties.      l hope i am correct  and you good luck.

Think it's rice because in many countries rice is the main food so it can be traditionally served all at once.