Part 2 out of 2 We\'re really more interested in determining the population chan

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Part 2 out of 2 We're really more interested in determining the population change during a particular time period, so we are more interested in calculating rates of change: the change in numbers (AN) as a function of a change in time Here, "change in" is represented by the greek symbol A (delta), so AN means "change in number". Calculating change in number as a function of change in time allows us to determine how large a population will be at any time in the future. By convention, the number of births and deaths in a population is usually expressed per individual in the population. So in a population of marmots, 26 births in a population of i45 in a year would produce a birth rate 26/145, 0.18 per individual. Thus, the birth rate less the death rate during a given time period, multiplied by the population size A) would be the same as the differential AN and is called nN. This is used to determine the change in a population from year to year. Given a global human population of 3.5 billion, a birth rate per year of 0.44 and a death rate per year of 0.17, what would be the population after 3 years? Assume the per capita growth rate does not change year to year. Enter your answer in scientific notation. x 10 Next part

Explanation / Answer

Birth rate = 0.44; Death rate = 0.17; population size = N = 3.5billion; time (t) = 3 years

Number of people born = 1.54 billion

Number of people died in one year = 0.595 billion people died.

Population growth in a year = (number of people born – of persons that died) = 0.945 billion people increase in the population in the first year = (N)

Percentage increase = population growth rate = (increase / original population)*100 = (0.945*100/3.5) = 27%

After one year population will be 27% of 3.5 = (0.945+3.5) = 4.445billion

After two years the population will be (27% of 4.445) + 4.445 = 5.645billion

After two years the population will be (27% of 5.645) + 5.645 = 7.169 billion

*** Please post the rest of the questions separately.

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