This relates to the increase in lifespan, and the effective medicines is increasing the “chance of conception” leading to a rise in birth rate. The enhancement of medics throughout the world has caused the decline in the death rate and “the root of overpopulation is the difference between the overall birth rate and death rate in population” (Overpopulation: Causes). In order to have a stabilized population, the number of births each year has to equal the number of deaths.
Another reason for overpopulation is immigration. A lot of people are preferring to live in more developed countries, such as US, UK, Canada and Australia, where medicine, education, security and employment are better than developing countries (Overpopulation: Causes). As more people enter those places, it leads to a higher demand for food, clothes, energy and homes, and this is giving rise to shortage of resources. Although the overall population might stay the same, the density of it can be affected leaving those places too crowded. Lack of family planning is also a crucial part of this dilemma. Lack of education for the people living below poverty line can result in having little to no knowledge about family planning. Countries where people get married at a very young age tend to have more children, contributing to higher birth rate. In China, every parent is only allowed to have one child because they are aware