vectorPopulation
Population is matrix vector:
​{Females: {Age1: 5, Age2: 6, Age3: 5, Age4: 3, AgeMore: 1}, Males: {Age1: 4, Age2: 4, Age3: 4, Age4: 1, AgeMore: 0}}

Birth rate is
{Females: {Age1: .49, Age2: 0, Age3: 0, Age4: 0, AgeMore: 0}, Males: {Age1: .51, Age2: 0, Age3: 0, Age4: 0, AgeMore: 0}}

Childbearing Age is 
{Females: {Age2, Age3, Age4}}

Births Flow is
[Birth rate]*sum([Population Rabbits].Females.Age2,[Population Rabbits].Females.Age3,[Population Rabbits].Females.Age4)




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