what organisms conduct photosynthesis
Photosynthesis occurs in plants and some bacteria, wherever there is sufficient sunlight â on land, in shallow water, even inside and below clear ice. Chemosynthesis is the use of energy released by inorganic chemical reactions to produce food. Chemosynthesis is at the heart of deep-sea communities, sustaining life in absolute darkness, where sunlight does not penetrate. Other bacteria make organic matter by reducing sulfide or oxidizing methane.