Answer:
The energy that is originally produced by primary producers is called "primary production" or "gross primary production."
Step-by-step explanation:
Primary producers, such as plants, algae, and some bacteria, use energy from the sun or chemical reactions to convert inorganic materials into organic compounds through photosynthesis or chemosynthesis. These organic compounds, such as glucose, are used by the primary producers as a source of energy for their own growth and metabolism. The primary production of an ecosystem represents the total amount of organic matter that is produced by the primary producers through photosynthesis or chemosynthesis, and it forms the base of the food chain, providing energy for all other organisms in the ecosystem.