1M+1F gives 1 offspring.
2M + 2F gives 2 offsrpings.
3M + 1F gives 1 offsrping
It gives those results approximately every two-three years during child-bearing years; you seem to have forgotten this.
(Remember, "Roll me over in the clover, roll me over lay me down and do it again..."?)
negative growth.
Negative growth X time = no growth.
No Growth = no humanity.
All of these flow from a faulty premise.
Sorry, do not pass Go, do not collect $200.
Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.