Organisms at a higher trophic level have less energy available. Comment.

Explanation

According to 10 per cent law of transfer of food energy, only 10% available food energy is stored at the next higher trophic level, the remaining 90% is lost in respiration, decomposition and heat. For example, 1000 k cal of energy is available at the producer level, 100 k cal goes to herbivores (primary consumers), 10 k cal to the primary carnivores (secondary consumers) and only 1.0 k cal to the secondary carnivores (tertiary consumers). Thus, available energy reduces at successive higher trophic levels of food chain.