Which of the following is NOT one of the requirements for life?

Inertia is the correct choice as it does not qualify as a requirement for life. Life as we understand it is characterized by several key features, including homeostasis, reproduction, and metabolism.

Homeostasis refers to the ability of an organism to maintain a stable internal environment, which is essential for functions such as temperature regulation and pH balance. Reproduction is vital for the continuation of a species, allowing for the transfer of genetic material to the next generation. Metabolism encompasses all biochemical processes that occur within an organism to maintain life, including energy production and nutrient processing.

In contrast, inertia, which is a concept from physics describing an object's resistance to changes in motion, does not pertain to biological processes or characteristics of living organisms. Thus, it does not align with the criteria that define life.