Question

In the following food chain 20J of energy was available to the hawks. How much would have been present in sunlight?
Sunlight-------Plants------Rats-------Snakes-------Hawks​

Answer 1

Explanation:

The 10% of the energy present in snakes is passed to the hawks.

Therefore, energy present in snakes = 20 x (100/10) = 200 J

Similarly, energy present in rats = 200 x (100/10) = 2000 J

and the energy present in plants = 2000 x (100/10) = 20000 J

and the energy present in sunlight is = 20000 x (100/10) = 200000 J