Kangaroos licking their arms to keep cool:. 1. A snake lying in the sunlight to warm up 2. Elephants flapping their ears to dissipate heat 3. A snake lying on a warm rock to warm up

Explanation:

Homeostatic means maintaining a stable internal and external heat. Since both needs to be kept at balance, it is necessary animals either gain or lose heat in their day to day activities.

Heat is lost or gained by various methods such as

Conduction: Loss/Gain of heat by bodies in contact

2. Radiation: Lost/Gain of heat by bodies not a contact

3. Radiation: Loss/Gain of heat due to Air current

So a. Kangaroos licking their arms to keep cool, is doing it through Evaporative cooling

A snake lying in the sunlight to warm up is by Radiation

Elephants flapping their ears to dissipate heat is by Convection

A snake lying on a warm rock to warm up is by Conduction

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