Final answer:
The sun is the ultimate source of energy in an ecosystem, captured by producers through photosynthesis and transferred to consumers.
Explanation:
The source of all energy in an ecosystem is the sun. Energy enters ecosystems primarily from sunlight, where it is captured by producers through photosynthesis. This energy is then transferred to consumers through feeding relationships.
Learn more about Energy Flow in Ecosystems here:
https://brainly.com/question/41494609
