A. fecundity
B. mortality
C. environmental resistances
D. biotic control
✅ The correct answer is option B.
Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called mortality.
Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called mortality.