Respuesta :
The correct answer is letter B. They use photosynthesis to produce chemical energy to support the entire ecosystem. Hope this answer helps. Good luck!
The right answer is B). photosynthesis.
Photosynthesis is a biosynthesis of transforming light energy into organic compounds. Light, in the form of photons, is captured by a colored pigment associated with a mineral or organic electron donor, and allows the use of mineral material for the synthesis (manufacture) of organic compounds: it is the photophosphorylation phase photosynthesis. Cytochromes play a role of electron carrier.