The doubling time in developed countries is about 120 years, while that
in developing countries is about 30 years. What is the significance of this in
terms of the challenges created by population growth?
When a population increases its resources decrease. There are more people who need food, clothing, shelter, etc. Other resources, such as educational and job opportunities also decease. The unemployment rate foes up as a result. Now you have problems that are directly associated with a high unemployment rate, such as a high crime rate and political corruption. When it takes a population more time to double and grow, the country is more prepared for the increasing population because the growth is gradual. The developed country has the resources, people and money, to build more houses and to insure that new tenants live in safe and sanitary environments. Developed countries tend to have better educational resources and can give their populations a better, safer, and healthier quality of life. Developing countries tend to focus on spirituality, traditions, and home remedies to replace going to the doctor/ dentist/ etc.
Hope this helps. Let me know if you need anything else,