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AP® Environmental Science

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A Hungry Bald Eagle

APES-TNXXJ7

Assume the phytoplankton store 2,000 units of energy from the sun and ten benthic invertebrates eat the phytoplankton. The ten benthic invertebrates are then eaten by two sea ducks. Both sea ducks are then eaten by a bald eagle.

How much of the original 2,000 units of energy will be available to the bald eagle​?

Perry, Matthew. "Food Chain." Wikipedia. Wikimedia Foundation, n.d. Web. 03 Feb. 2016. <https://en.wikipedia.org/wiki/Food_chain#/media/File:Chesapeake_Waterbird_Food_Web.jpg>&gt;.

A

200 units

B

100 units

C

20 units

D

2 units

E

0.2 units