Final answer:
Primary producers produce high-energy compounds through photosynthesis and chemosynthesis.
Step-by-step explanation:
Primary producers, such as plants and certain types of bacteria, produce high-energy compounds through photosynthesis. During photosynthesis, they convert sunlight, water, and carbon dioxide into glucose, a high-energy compound that serves as a source of energy for other organisms. Another way primary producers produce high-energy compounds is through chemosynthesis, which occurs in certain bacteria and other organisms living in extreme environments such as hydrothermal vents. These organisms use inorganic molecules, such as hydrogen sulfide, to produce high-energy compounds without relying on sunlight.
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