During the race the body temperature of a runner increases. the runner body responds by perspiring (sweating), which lowers the body tempature. this process is an example of

Maintain homeostasis through feedback inhibition

Explanation:

The human body tends to maintain constant internal conditions, which is the homeostasis. Irrespective of the level of physical activity or temperature of surroundings, the body temperature stays around 37 degrees Celsius. Any deviation from the narrow range of body temperature activity the feedback system to restore the homeostasis.

For example, during excess physical activity such as race, the body temperature is raised due to increased production of heat. The body's thermostat senses the deviation and signals the effector organs to restore the normal range of body temperature.

One of the mechanisms is secretion of sweat from sweat glands present in the skin. Evaporation of sweat from the body surface leaves the body's surface cool behind.

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significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.