What stuff are living things?

Living things are primarily composed of cells, which are the basic units of life. These cells contain various organic molecules, including proteins, lipids, carbohydrates, and nucleic acids, that perform essential functions for growth, metabolism, and reproduction. Additionally, living organisms require water and other minerals to maintain physiological processes and sustain life. Overall, the complexity of their biochemical components enables living things to interact with their environment and adapt over time.