The changes of the organisms depend on the changes of the population. A population refers to the number of individuals of a particular species. There are things that render to its survival like food, water and shelter in an area for natural organisms. Population dynamics deals with how population is affected by birth and death rates immigration and emigration and also by aging population and population decline. There is a strong link between global development challenges and changes in population growth and people distribution. Although the mortality rate of people in developing world, where life expectancy is low due to poverty and lack of economic growth, they tend to experience low working force and an aging population. In countries that experience high income rates there tends to be a slow growth rate and the life expectancy tends to be high, this leads to stagnation of the growth of people where it is either stagnant or it declines.
An estimate of 9.1 Billion of world populace is projected to rise in the year 2050 with majority of the population growth from developing countries. The population in this case acts as increases to the growth with a huge consumption, technology and emission of growth. The growth of the youth in the world has increased amicably and it is expected to rise by the mid century. Although the age of the youth in developing countries is slowly declining, this is raising alarms because of the contributions in the labor and old age being lower. The youth at a young age are full of energy, and if provided with the best education can be at the front line in leading technology and innovations.
Migration affects the demographic change due to the resulting need for urbanization and development due to economic changes globally. It is caused by the need of peoples increase in income, availability of job opportunities, the need for better transport, communication networks. Migration can also be increased by political instability, natural disasters for example the hurricane, typhoon and famine or development projects. The migration policy has played a big role in ensuring that the integration of migrants in countries they reside and also the input they contribute to their countries of origin. Whenever there is an upsurge in the populace, the environmental resources are at a high risk and often associated with degradation. The people who rely on natural resources for their everyday life become venerable to the areas migrated.
The rapid increase in the population growth increases the danger to human development thus leads to a decline in providing for better basic salaries, poverty eradication and therefore weakening adaptation of climate change. In urban migration the growth of population hinders the need for good government planning and governing particularly when the rapid growth is unprepared. Despite the Strong Links associated with population dynamics and climate changes there is need for the policies and strategies to govern the emission of population growth. Also the government should ensure that the current population growth is slowed down to reduce pressure on natural resources and give the government time to provide sustainable development. The government can also develop initiation in reducing poverty, mortality and education.
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