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Urban Heat Islands
Beginning of essay
For more than 100 years, it has been known that two adjacent cities are
generally warmer than the surrounding areas. This region of city warmth, known
as an urban heat island, can influence the concentration of air pollution. The
urban heat island is formed when industrial and urban areas are dev ....
Middle of essay
....e city occasionally produces a shallow unstable
layer near the surface. Pollutants emitted from low-level sources, such as home
heating units, tend to concentrate in this shallow layer, often making the air
unhealthy to breathe.
The constant outpouring of pollutants into the environment may actually
influence the climate of a city. For an example, certain pollutants reflect
solar energy, thereby reducing the sunlight that reaches the surface. Some
particles serve as nuclei upon which water a.... |
| Number of words: 524 |
Approximate pages: 2 |
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