Pollution: Developed countries produced way more pollution than developing countries by factories and motor vehicles.
Medicine: Developed countries have more education on local diseases and have more medical facilities than developing countries have.
Unsanitary Conditions: Developing counties have worse working conditions and sanitary areas, as they do not have the same resources as developed countries have.
Birth: Rates are higher in developing countries with lack of sex education and sexual protection than developed countries.
Death: Rates are higher in developing countries with lack of medicine and facilities than developed countries.
Technology: Technology is way more popular in developed countries as there is more resources and modern facilities as electronic stores, car dealerships and etc. than developing countries.
Education: Developed countries have more resources as the internet, more books, better teachers and etc. That is why developed countries have better education than developing countries.