I really need some help on this one, Thanks!

1) Grass contains 5000 kcal of energy.

2) Mice contains 500 kcal of energy

3) Snake contains 50 kcal of energy

4) Eagle contains 5 kcal of energy

Explanation:

From one trophic level to another only 10 percent of energy is transferred and the remaining 90 percent is lost. Grass has 5000 kcal of energy so 500 kcal of energy is transferred to mice. When snake eats mice, only 50 kcal of energy is gained and when eagle eats snake only 5 kcal of energy is transferred.