The main source of energy for producers in an ecosystem is ; ( A ) Light energy.
The primary producers in an ecosystem are mainly green plants and green algae because of their ability to trap sunlight and undergo photosynthesis with water and CO₂ present in the atmosphere.
The main source of energy for primary producers is the energy emanating from a light source ( light energy ) which they use to produce their food.
Hence we can conclude that The main source of energy for producers in an ecosystem is Light energy.
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