Which trophic level is always a necessity in an energy pyramid or food chain?

Question

Responses

producer
producer

primary consumer
primary consumer

tertiary consumer
tertiary consumer

secondary consumer

Answer 1

The trophic level that is always a necessity in an energy pyramid or food chain is the producer. Producers, such as plants and photosynthetic organisms, convert solar energy into chemical energy through photosynthesis, forming the base of the food chain and providing energy for all other trophic levels.