👉 The term "nonessential" in the context of biology and medicine refers to a substance or organism that is essential for life but does not provide any benefit, either directly or indirectly. Nonessential organisms are often found in environments where they do not have enough resources to survive on their own, such as water, food, and oxygen. Nonessential organisms may be part of the ecosystem by consuming other organisms, passing them off as waste, or even competing with them for resources. For example, some plants