Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.

The ten percent rule states that only about 10% of energy is transferred from one trophic level to the next higher trophic level. Therefore, if the tertiary consumer tuna receives 100 kilocalories (kcal) of energy from the secondary consumer, which in turn received 1000 kcal from the primary consumer, we can calculate the amount of energy received by the tertiary consumer tuna.

By applying the ten percent rule, the amount of energy transferred to the tertiary consumer tuna would be:

(10% of 1000 kcal) * 10% = 100 kcal * 0.1 = 10 kcal.

Therefore, the tertiary consumer tuna would receive approximately 10 kilocalories (kcal) of energy.