The food chain would be:
Flower --> Roadrunner --> Jackal
We know that the amount of energy passed from one tropic level
to a higher one is 10. Therefore:
Energy of Roadrunner = 0.10 *30,000 kcal = 3,000 kcal
Energy of Jackal = 0.10 * 3,000 kcal = 300 kcal (ANSWER)
