Global Population Growth

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17th February 2018
Answers to the questions
According to the Ecology Global network (n.p), it takes one minute for 258 babies to be born. As such, the world birth rate is approximately four births per second.
Ecology Global Network (n.p) postulates that approximately two people die every second in the world.
The difference between the world’s birth rate and death rate gives the net sum of the people that are added to the world every second.
Birth rate- Death rate = 4-2. Therefore, two people are added to the world every second.
It will take approximately 5.8 days to add a million people to the world. I. e
1000000/ 2= 500000, 500000/3600= 138.89. 138.89/ 24 = 5.8 days.
Number of people added to the world population every month and every year
People added to the world every second = 2; people added to the world every day 2*3600*24= 172800. Therefore, in every month 172800*30, i.e., 5,184000 people are added to the world. This translates to 62, 208,000 people added to the world in one year.
How many people lived in the United States on 7th December 1997?
According to the United States (US) Census Bureau (n.p), a net of one person is added to the US population in every fifteen seconds. Therefore, four people are added to the population in every minute and 5760 every day. According to the (US population by Month n.p), the US population was 274.11 million people on On 1st December 1997. Therefore, the number of people added from 1st December to 7th December was 5760* 7= 40320.

Thus, the US population on 7th December 1997 was 274110000+ 40320= 274150320.
How many are here now?
According to the United States Census Bureau(n.p), the current population of US is 327, 203, 174. The death rate is one death in every eleven seconds. Therefore, 327 deaths in one hour, 7855 deaths in one day, 235,636 deaths in a month, and 2,827,636 in one year. As such, the total deaths that have occurred since 7th December 1997 are 19*2,827,636 +3*235,636= 54,431,992 deaths. People alive since 7th December 1997 are 274, 150,320-54,431,992=219,718,328.
How long does it take for the population of the US to grow by two million people?
A net gain of one person in US is 15 seconds. Therefore, 2.7M people will take 2700000*15. 40,500,000/3600, = 11250 hours. 15.6 months or one year and three months.
Implications of the growth
This population growth strains the available resources and, the government needs to plan according to accommodate the growing population. On the other hand, this population growth provides the country with a continuous labor force, which is crucial for economic sustainability (International programs n.p).
Works cited
Ecology Global Network: World Birth Rates and Death Rates. Retrieved on 17th February 2018 from http://www.ecology.com/birth-death-rates/International Programs. Retrieved on 17th February 2017 from https://www.census.gov/programs-surveys/international-programs.html
United States Census Bureau: The US and World Population Clock. Retrieved on 17th February 2018 from https://www.census.gov/popclock/
US population by month. Retrieved on 17th February 2018 from http://www.multpl.com/united-states-population/table?f=m