Answer :
It was plants. Plants used photosynthesis, basically the sun's energy. And other animals ate the plants, and other animals ate the animals that ate the plant.
Answer:
Producers are organisms who make (or produce) their own food. Plants are producers. Plants are autotrophic, meaning that they self-feed through the process of photosynthesis. Without plants in the food chain creating energy from a non-living source (the sun) the rest of the food chain would not exist
Explanation:
