Amap that shows the layout of the roads in a city with no information about elevation is called a map.

A map that shows the layout of the roads in a city with no information about elevation is called a planimetric map. This type of map shows  only the horizontal positions of the features represented. The represented geographic objects, natural and cultural physical features, and entities are revealed without topographic features such as roads, buildings, and water bodies.

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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.