Question

Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the herbivorous duck get from the aquatic vegetation?
aquatic vegetation -->herbivorous duck --> bivalves --> sea ducks -->bald eagle
I know its 50,000 kg but how is the division worked down?

Answer 1

Answer:

Energy with herbivorous duck is $50000$Kg

Explanation:

As we know that energy retained at each trophic level is ten percent of the total energy contained with in an species at the previous trophic level

Thus, energy retained in bald eagle is $10$% of the sea duck's energy

$\frac{10}{100} * X = 50\\X = 500$

Thus energy with sea duck is equal to $500$Kg

This energy of sea duck is equal to $10$% of the  energy of bivalves

Thus, energy retained in  bivalves

$\frac{10}{100} * X = 500\\X = 5000$

Thus energy with bivalves $5000$Kg

Now, the energy with bivalves is $10$% of the  energy of herbivorous duck

Thus, energy retained in herbivorous duck

$\frac{10}{100} * X = 5000\\X = 50000$

Thu, energy with herbivorous duck is $50000$Kg

Answer 2

Answer:

c.) 50,000

Explanation: