The theory that describes the origins of life from simpler molecules is known as abiogenesis. This scientific concept proposes that life arose naturally from non-living chemical substances through a series of gradual steps, leading to the formation of complex organic compounds. Abiogenesis suggests that under certain conditions, such as deep-sea hydrothermal vents or primordial soup, simple molecules could combine to create the first living organisms, laying the foundation for all subsequent evolutionary processes and the diversity of life observed today.