Question

the urban heat island effect can be caused by impervious surfaces (like concrete) and air conditioning units. which of these also causes the urban heat island effect? increased vegetation fuel combustion

Explanation:

To determine the cause of the urban heat island effect, we analyze the options:

• Increased vegetation: Vegetation (like trees, plants) helps cool the environment through processes like transpiration and providing shade. So it reduces, not causes, the urban heat island effect.
• Fuel combustion: Activities involving fuel combustion (e.g., in vehicles, power plants) release heat and pollutants. This heat contribution, along with other factors, increases urban temperatures, thus causing the urban heat island effect.

Answer:

Fuel combustion