Living organisms are incredibly complex systems that exhibit a high degree of organization and functionality. They are made up of numerous interconnected parts, from cells to tissues to organs, all working together to carry out various biological processes necessary for survival. The complexity of living organisms is evident in their ability to respond to stimuli, adapt to changing environments, and reproduce. Additionally, living organisms exhibit a high degree of diversity, with different species displaying unique characteristics and behaviors. Overall, the complexity of living organisms is a result of millions of years of evolution and adaptation, leading to the incredible diversity and functionality seen in the natural world.