Answer :

Gibbs
Nearly all of the energy that drives an ecosystem comes from the sun in the form of solar energy. Solar energy enters the ecosystem through a process of photosynthesis that is the starting point for all forms of plant and animal life on the planet. The sun and solar energy are the beginning source of energy for almost all functioning ecosystems and organisms on the planet. 
arshikhan8123

The correct answer is the sun.

Where does all energy in an ecosystem come from?

The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants. A small proportion of this chemical energy is transformed directly into heat when compounds are broken down during resp​iration in plants.

How does energy flow in an ecosystem?

Energy moves through an ecosystem in a single direction. It flows from the Sun to autotrophs or producers. Then it flows from producers to consumers. Energy never flows backward from consumers to producers.

Learn more about ecosystem here https://brainly.com/question/26551655

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