Here's why:
* Complexity is a hallmark of life: Living organisms, from the simplest bacteria to the most complex animals, exhibit a high degree of structural organization. This organization is hierarchical, with smaller units forming larger ones. For example, cells are the basic unit of life, and they are organized into tissues, organs, and organ systems.
* Structure determines function: The complex structural organization of living organisms is not random. Each level of organization contributes to the overall function of the organism. For example, the intricate structure of the lungs allows for efficient gas exchange.
* Emergent properties: The complex organization of living things leads to emergent properties, meaning that the whole is greater than the sum of its parts. This is a key characteristic of living systems.
In summary, complex structural organization is a defining feature of living organisms.
