What do producers do in an ecosystem?
Producers somehow affect - whether directly or indirectly - every organism in their ecosystem. All producers make their own food - either through photosynthesis or chemosynthesis, and the consumers of the ecosystem eat the producers, and other consumers eat those consumers, and eventually every organism in that ecosystem has consumed producers.
producers are the only organisms that can take energy from the sun and convert it into carbohydrates (or sugars) so that consumers can use it. the process is called photosynthesis. without producers in an ecosystem, the ecosystem would die because there is no other way to convert energy from sunlight into carbohydrates.