What is the direction of energy flow in an ecosystem:

Explanation

In an ecosystem, energy flows in a unidirectional manner, primarily from producers (such as plants) to consumers (such as herbivores, carnivores, and omnivores). This flow occurs through feeding interactions in a food chain or food web.Producers capture energy from sunlight through photosynthesis and convert it into chemical energy. This energy is then passed on to consumers as they eat the producers. Energy is gradually lost as heat at each trophic level, making it a one-way flow. Therefore, option a is correct.