Automatic stabilizers are any part of the government budget that offsets fluctuations in aggregate demand. They offset fluctuations in demand by reducing taxes and increasing government spending during a recession, and they do the opposite in expansion
If the ecosystem is balanced then the population would aslo be balanced, IG its the unbalanced ecosystem which leads to unbalanced population and when its unbalanced then we can say which one would be largest and which one smallest..
A gene plz don't report if this is not what your lookin for