<em><u>Producers are organisms that make their own food. They are also called autotrophs, they include plants, algae, and some bacteria. </u></em>
Producers create food for themselves and also provide energy to the rest of the ecosystem.
<u><em>Producers make their food using the process of photosynthesis for green plants and algae, and chemosynthesis for chemosynthetic bacteria.</em></u>
Consumers are organisms that can not make their own food but obtains energy from producers when they eat then.