POPULATION size

0 votes
asked Nov 27, 2017 by riddhi patel (160 points)

In a population, the birth rate is the percentage increase of the population due to births, and the death rate is the percentage decrease of the population due to deaths. Write a program that asks for the following: 
 

  • The starting size of a population (minimum 2) (Prompt Enter starting size: )
  • The annual birth rate (Prompt Enter annual birth rate: )
  • The annual death rate (Prompt Enter annual death rate: )
  • The number of years to display (minimum 1) (Prompt Enter years to display: )


The program should then display the starting population and the projected population at the end of each year. It should use a function that calculates and returns the projected new size of the population after a year. The formula is 

      N = P(1 + B)(1 - D) 

where N is the new population size, P is the previous population size, B is the birth rate, and D is the death rate. Annual birth rate and death rate are the typical number of births and deaths in a year per 1000 people, expressed as a decimal. So, for example, if there are normally about 32 births and 26 deaths per 1000 people in a given population, the birth rate would be .032 and the death rate would be .026. 

1 Answer

0 votes
answered Nov 29, 2017 by Virginia DDaniels (260 points)

Population is gives both benefit and disadvantage to country. Population increase make a poverty,lead to loss of biodiversity, air and water pollution and increased pressure on land. Best online essay writing  service Unemployment is the main problem create by over population. Scarcity of water, food, and money by over population. Other side population is the strength of country.

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