Which Event Did Not Contribute to the Recovery of the Black

Question

Which event did not contribute to the recovery of the Black Sea during the 1990s?
A) Reduction in eutrophication
B) The arrival of another comb jelly that ate Mnemiopsis
C) Changes in bottom-up control
D) Allee effects

Accepted Answer

Allee effects refer to a phenomenon in ecology where a population's growth is hindered at low densities, which would not contribute to the recovery of the Black Sea.