Heat Island

“A heat island is a metropolitan area that is significantly warmer than its surrounding rural areas due to human activity. The main cause of heat islands is the replacement of natural land cover (such as trees and vegetation) with impermeable surfaces (such as concrete and asphalt), which absorb and re–radiate more heat than vegetated surfaces. …

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Homeostasis is the maintenance of a constant internal environment in the body. This is achieved by various mechanisms that keep the body’s internal conditions within a normal range. The body’s internal environment includes factors such as temperature, pH, and concentrations of dissolved gases and nutrients.