Final answer:
Each level of biological organization contributes to an organism's complexity and functionality, from atoms forming molecules to cells, tissues, organs, and organ systems working together to support life.
Step-by-step explanation:
Each level of biological organization is vital to an organism because it reflects a hierarchy in which simpler elements come together to form more complex structures with specific functions. At the most fundamental level, an atom is the basic unit of matter, and when atoms combine, they form molecules, which are essential for various biological processes. Molecules, in turn, make up organelles that carry out specialized tasks within cells. Cells are the smallest unit of life, grouping to form tissues. Different types of tissues join to construct organs, each performing a unique function vital for the organism's survival.
Organs work together as part of organ systems, such as the circulatory system, which is critical for transporting nutrients and oxygen throughout the body. Collectively, these systems support the organismal level, which is the living being capable of independent physiological functions necessary for life. This intricate organization allows organisms to maintain homeostasis and adapt to their environment, highlighting the significance of each level in the hierarchy of biological organization.