This video lecture from Homeostasis (F.Sc. second year Biology) covers: Regulation of heat exchange between animals and environment, thermoregulation in mammals (humans) and adaptations to low and high temperature. It also covers Fever (pyrexia). Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.