6. Which of the following best describes the flow of energy in a food web that contains the following organs zooplankton, bacteria and phytoplankton?
A. fish, zooplankton, phytoplankton, bacteria
B. phytoplankton, zooplankton, fish, bacteria
C. bacteria, phytoplankton, zooplankton, fish
D. phytoplankton, zooplankton, bacteria, fish