Answer:
inorganic chemicals
Explanation:
Organisms that use inorganic chemicals as a source of energy and convert them into organic substances are known as Chemosynthetic bacteria. Unlike plants, they obtain their energy from the oxidation of inorganic molecules, rather than photosynthesis. Chemosynthetic bacteria use inorganic molecules, such as ammonia, molecular hydrogen, sulphur, hydrogen sulphide and ferrous iron, to produce the organic compounds needed for their subsistence. Chemosynthetic bacteria are found in deep-sea or in the areas where sunlight does not penetrate.
