Question

give reasons why it is hotter in cities than the rural areas surrounding them

Answer 1

This question is having various reasons:
1. Urban areas, the concrete and metals in buildings and the asphalt of road get heated up during the day. This heat is released during night.

2. The crowded high rise buildings of the cities trap the warm air and thus raise the temperature of the cities.

3. Urban areas has less greenry and maximum pollution which causes heat to rise.