Describe the main differences between economies of cities in developed, emerging and developing countries

Explanation:

Developed Countries: Developed Countries have advanced economies, good infrastructure, and a high standard of living. Their markets will be highly regulated and high per capita income.

Emerging Countries: These countries will have a developing and manufacturing base with rudimentary infrastructures. Emerging countries are the suppliers of natural resources to the more advanced and developed countries. Their per capita income would be low as compared to developed nations.

Developing Countries: Developing countries economies are the same as the emerging countries.

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.