Q. 183.8( 5 Votes )
A food chain represents a unidirectional flow of X. What is X?
Unidirectional flow of X represents flow of energy in a food chain. Energy is transferred via trophic levels from producers to carnivores. The energy enters the plants from sun during photosynthesis. This energy is further passed on from one organism to another in the food chain .
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List two biotic components of a biosphere.Xam idea - Science