Question

If 7,000 kCal are available at the producer level, how many kCal will be available for
the secondary consumers? Show your work.

Answer 1

Answer:

70 kCal

Explanation:

With every increase in the level of the food chain/pyramid, only 10% of the calories are passed on.  (The rest are lost as heat)

So, form producers to primary consumers we have:

7,000 kCal  x  0.10 = 700 kCal

**I multiplied by 0.10 to show that only 10% of the kCal move on

Then, from primary consumers to secondary consumers:

700 kCal  x  0.10 = 70 kCal  (the answer)