A primary producer in a food chain would be located in the first step of the chain.
1. Primary producers, such as plants, algae, and certain types of bacteria, are organisms that can produce their own food through photosynthesis.
2. They are the foundation of any food chain as they convert sunlight into energy that can be consumed by other organisms in the ecosystem.
3. By being at the beginning of the food chain, primary producers support the entire ecosystem by providing energy for consumers like herbivores, which eat plants, and eventually for predators higher up in the food chain.
In summary, primary producers are located in the first step of a food chain as they play a crucial role in converting sunlight into energy that sustains the entire ecosystem.