Write a paragraph describing the location of the major population centers. Make note of their proximity to physical features or other natural resources. What characteristics do these locations have in common?

Paris, Lyon, Toulouse and Marseille are densely populated cities due to its geography.

Explanation:

Paris is located in the north while Lyon is located in the east side and both Toulouse and Marseille are present in the south inside the France. These are the highly populated cities of France. All these cities are surrounded by mountains having plain areas and present along the river. These physical features of the cities make them densely populated areas of France. These locations have one thing in common is that they all are present along the rivers.

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.