Question #a43c7
1 Answer
May 30, 2017
10 billion kilograms or 10 million tonnes
Explanation:
Phytoplankton > Primary consumer > Secondary consumer > King Crab.
Since no other information provided energy loss in each step is 90% (assumed)
Therefore, Secondary consumer mass must be 10 times the amount of King Crab (100 million kilograms).
Primary consumer mass must be 10 times the amount of secondary consumer mass (1 billion kilograms).
And finally phytopalnkton mass must be 10 times the amount of primary consumer (10 billion kilograms).
Your answer is 10 billion kg or 10 million tonnes.
There is a link showing aquatic food web:
http://www.teachoceanscience.net/teaching_resources/education_modules/aquatic_food_webs/learn/
