Choose an appropriate reason for the following-

Dogs generally hang out their tongues in summer.

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Because of high temperature

Because of low temperature

Because of high density

Because of high pressure

answer is A.

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Detailed Solution

Concept: Dogs' body temperatures are high. Dogs also have fewer sweat glands, which are used to sweat and control body temperature. Due to the extreme heat of summer, dogs frequently stick out their tongues. Dogs, therefore, extend their tongues to maintain their body temperature.
The blood veins in the tongue dilate to create a larger surface area for dissipating heat when the tongue is extended, acting as a radiator. The primary cause is that dogs hang their tongues to keep themselves cool. They are able to return to their normal body temperature thanks to this. Panting aids in their cooling down. Dogs' bodies are designed to pant in order to maintain body temperature because they have extremely few or no sweat glands.
Hence, the correct answer is option 1.

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