In the image, which animal is both secondary and tertiary consumer?

The lion is both a secondary consumer and a tertiary consumer in the food chain.

The percentage of energy contained in each successive tropic level decreases by about ninety percent because

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living organisms consume the energy that is obtained by the lower trophic level
decomposers consume energy at each trophic level
higher trophic levels cannot access energy from the sun
a lot of energy is released to the environment at heat