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An urban heat island is an urban area or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities. The temperature difference is usually larger at night than during the day, and is most apparent when winds are weak. UHI is most noticeable during the summer and winter.
Global warming” refers to the rise in global temperatures due mainly to the increasing concentrations of greenhouse gases in the atmosphere. “Climate change” refers to the increasing changes in the measures of climate over a long period of time – including precipitation, temperature, and wind patterns.
Cross-border pollution in the narrow sense is defined as those pollutants that cross political boundaries due to natural forces, such as running water, wind velocity, atmospheric movements and ocean currents. This is called nat- ural cross-border pollution. In addition, some pollutants are transferred by human actions.
Explanation:
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