Question

If a population has a birth rate of 40 individuals per 1,000 per year and a death rate of 30 individuals per 1,000 per year, how will the population change each year? (Assume that the population is below carrying capacity and that there is no immigration or emigration.)a) It will decrease by 70%. b) It will increase by 1%. c) It will increase by 5%. d) It will increase by 70%. e) It will increase by 100%.

Answer 1

Population will increase by 1 %

So option (b) will be correct option

Explanation:

We have given birth rate of 40 individuals per 1000 per year

So birth rate in percentage
`=(40* 100)/(1000)=4` %

And rate rate of 30 individuals per 1000 er year

So death rte in percentage
`=(30* 100)/(1000)=3` %

So net change in population change per year = 4-3 = 1 %

So population will increase by 1 % per year

So option (b) will be correct answer