If 7kj of energy are transferred to the lion estimate the energy available in the grass for the following food chain grassimpalaleoparklion?

In a food chain, energy transfer typically follows the 10% rule, where only about 10% of the energy from one trophic level is passed to the next. If the lion receives 7 kJ of energy, then the energy available in the grass can be estimated by multiplying this amount by 10 for each level back to the grass. Therefore, the energy available in the grass is approximately 7 kJ / 0.1 (for the lion to park) / 0.1 (for the park to leopard) / 0.1 (for the leopard to impala) / 0.1 (for the impala to grass), resulting in an estimated 70,000 kJ available in the grass.