$r$ for flour beetle is

Two opposite forces operate in the growth and development of every population. One of them related to the ability to reproduce at a given rate. The force opposite to it is called

The standard of living is very badly affected by

Under a particular set of selection pressure, organisms evolve towards the most ...$A$... reproductive strategy. Some organisms breed only ...$B$... in lifetime while others breed ....$C$... in life time

Choose the correct option for $A, B$ and $C$

Exponential growth in human population was done in