WAEC - Biology (1995 - No. 43)
Which of the following is not an effect of over-crowding on a population?
Death
Competition
Commensalism
Aggression
Cannibalism
Explicació
Commensalism is a long-term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed.
- Hence; commensalism is not an effect of OVERCROWDING.