Demographic economics

The population structure of El Salvador has undergone dramatic changes in the past 26 years. The population has aged since the civil war, with far more people reaching higher ages. Fertility is showing signs that it is beginning to decline thanks to decades of family planning initiatives. The outlook for the future is one of continued fertility and mortality decline, but only if they improve their water and sanitation infrastructure. If mortality and fertility continues to decline, El Salvador…

Reading a population pyramid is relatively simple. In the examples below you will see a few different types of data that. The x-axis displays the number of people, and the y-axis is the age group that corresponds with the amount of people. You will also notice that there is a red and black side of the pyramid. Colors may differ with other graphs, but in this case males are in red and females are in black. Population pyramids can display some interesting and useful data. The graphs themselves can…

A Planet with a Population Problem Over seven billion people living on Earth. Over one million living in extreme poverty, and almost one million people starving. Nearly twice as many people being born than dying. The population on Earth is continuously growing, but Earth’s size itself is not. So where are we to put all these people when we run out of space? Resources are being depleted, basic needs are not being met, poverty and starvation rates are sky high, and economies are suffering as well…

Scientist and economist Thomas Malthus collected data that demonstrated that a population typically grows exponentially, while resources usually grow logistically, increasing slowly. Malthus decided that based on his observations about the growth patterns of humans and their resources, humans would overshoot their food or resources. When this happened, he stated that there would be a catastrophic disturbance and excessive dieback within the human population would occur to compensate for…

When comparing the countries of China and Japan to one another, it is evident that their belief systems and cultures are strikingly similar. Confucianism and its philosophy are the foundation upon which each of these countries beliefs and traditions stem from. From the perspective of the elders in these countries, there seem to be a lessening amount of children making up the population (Ho 1992). Despite these similarities, there are clear differences between the aging experience in these two…

For exercise two I will be comparing and contracting Green Peace verses Population connection. Both the Organizations have several differences, but they have some similarities as well. There are two main differences between the two organizations such as, Mission statement, and the environmental issues they focus on. The first contract between Green Peace and Population connection is their mission statement and what type of organization they are. What is a mission statement, a mission statement…

of things will result not environmental degradation, but in increased efficiency and technological solutions. Another idea, called the Demographic Transition Model, debated Malthus in reference to death/birth rates and how they would affect the population growth. “The Demographic Transition Model (DTM) is based on historical population trends of two demographic characteristics – birth rate and death rate…

2.1 China’s One-Child Policy The Communist Party officially implemented the One-Child Policy in 1979 as a means to curb population growth (The Guardian, Date). Prior to such implementation, the Chinese Government adopted the slogan “Late, Long, Few” (later marriage, longer birth intervals, and fewer births) in 1975, urging each family to have no more than two children. To achieve its goal of lowering population growth rate, the Chinese Government later introduced the One-Child Policy…

Harvard professor Edward O. Wilson, in his nonfiction book, The Diversity Of Life, narrates Wilson’s life while elaborating on the topic of biodiversity. Scientists, Flockhart et al., in their scientific journal article, “Unravelling the annual cycle in a migratory animal: breeding-season habitat loss drives population declines of monarch butterflies,” hypothesize the causes of butterfly population loss. While Wilson’s purpose is to discuss science in a narrative manner to provide reading for…

In experiment 1, the growth of Paramecium aurelia fits the curve of the logistic population growth because they have limited resources as the intraspecific competition, influencing negatively on fitness for both individuals. From Day 0 to Day 12, with unlimited resource, Paramecium aurelia is at the acceleration phase, more growing cells than dead cells. Day 12 where the inflection point is indicates the growth rate changes to constant. After Day 12 and until Day 14, the growth enters the…