Food chains show energy transfer between organisms. the size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. why is there a limit to the number of levels that a food chain can reach? plants are not infinite in number. producers are limited by consumers. carnivores are too large to be eaten. energy is lost at each trophic level.

The correct answer is Energy is lost at each trophic level.

The plants produce their food with the help of the energy present in the sunlight. In this way, the plant convert the light energy into chemical energy, which can be transferred to the consumers.

The energy transferred at each trophic level is only 10% of the preceding trophic level. The rest of the energy is used by the organism itself and dissipated into the atmosphere through various metabolic processes.

The energy is transferred from producer to primary consumers, then secondary and tertiary consumer. The energy,w hich reach to the tertiary consumer is very less that it cannot support the energy demands of other levels.

the correct option is option d