Population Growth Essay Us Population Essay example

1. Population Growth Essay
Population Growth
Population Growth is becoming a huge issue in our country and world today. The reason that it has
become such a pressing issue is that our growing population needs a growing economy and has
growing needs. As our population grows, the needs of the population become bigger. Very large
population becomes a problem when there isn't enough space to live, and not enough food and
supplies to live off of. We can predict population size in thefuture by examining the recent past.
This can give us good ideas about what we will have to do to accommodate all of the people in the
US and the world, or start to put restrictions on babies being born like our fellow country China. In
this activity we were given the...show more content...
The errors in the linear model were random, but not off by much each different year. The population
wasn't off by more than 2,000 people at most in one year. Using the linear model we made some
predictions like what will the population being the year 2000? By putting the equation into the
calculator and going into the table, we predicted that in the year 2000 the population would be 2.76
billion. Another prediction that was made was what will the population be when I retire. Most people
retire when they are about sixty– five, so that would be in the year 2045. The population in 2045 is
predicted to be 3.8 billion according to the linear model. The population will double from the
current population in the year 2114. The population will then be 5.52 billion. One thing that I am
concerned about is how high the population will be when my children are growing up. I plan to
have children when I am about 27 so when my child is about 20, the year will be 2027 and the
population will be 3.4 billion. Next we did the same procedure for the world population. In this case,
the exponential model fit the data more efficiently. The equation was 2,552,666,405 =
1.018,677,273^x, r = .998328246. The world population for the year 2000 is will be 6.44 billion.
Upon retiring the world population will be 1.5 trillion people. Comparing the two models the
exponential model makes sense because the population is growing at such a rapid rate. The
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2. Us Population Essay example
Characteristics of the U.S. population in 2025 The United States is the third most populated country
in the world. This country holds about 4.5% of the world's population. The U.S. population is
currently estimated to have 308.7 million persons. This number is more than double of the
population from 1950. Besides the fact of the population has doubled its size, the population has also
become qualitatively different from the one from 1950. As noted by the Population Reference
Bureau, "The U.S. is getting bigger, older, and more diverse." The growth of the population is the
result of the trends over time in the relationship of increased births, decreased deaths, and increased
net immigration....show more content...
Population, by Age Group: 1950–2050
Besides the total size of the population, one of the most significant demographic characteristics of a
population is the age and sex structure. The immigration has had a major influence on both the size
and the age structure of the U.S. population. The U.S. population has experienced remarkable growth
since 1950. The number of women slightly outnumbered the men. U.S. Population, by Sex,
1950–2050, in Millions
In general, countries experiencing high fertility and rapid population growth, have a "young"
population structure and the important policy considerations are if there are enough schools and,
sufficient jobs and housing to accommodate this population. Countries with "old" population
structures face the problems of structuring and developing retirement and health systems to serve
this older population and also they have a considerable reduction the number of the working force.
The decline of the work force is one of the most dramatic economic tendencies of the past four
decades in the United States. The individual's decision of whether to stay in the workforce or to
retire is based on the collaboration of a number of factors including the following: eligibility for
Social Security benefits, availability of and benefits under an employer–financed pension plan, work
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