Chemolithoautotrophy is a process used by certain microorganisms to obtain energy from inorganic compounds. These organisms, known as chemoautotrophs, utilize substances like hydrogen sulfide or ammonia, converting them into energy through chemical reactions. This process allows them to thrive in environments where sunlight is not available, such as deep-sea vents. In addition to energy, chemolithoautotrophs also fix carbon dioxide to produce organic compounds, which serve as food for themselves and other organisms. This ability plays a crucial role in ecosystems, particularly in extreme environments, contributing to the overall carbon cycle and supporting diverse life forms.