For something to be considered living, it must be composed of at least one what?

Explanation:

There are many characteristics of life, including, cells. A cell is a tiny unit of life that carries out many different processes.

If something is considered living, it must have at least one cell, but it can have more. For example, bacteria is unicellular and living. We (humans) are also living, but made of billions of cells.

Therefore, for something to be considered living, it must be composed of at least one cell.

carbohydrates are the body's preferred source of energy.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.