Describes how certain animals keep warm, how the human body loses and retains its heat, and how various types of clothing and dwellings aid in heat retention.
Explains how the body reacts to changing conditions such as temperature or humidity, how it adapts to its surroundings, and how the skin protects the body from harmful sun rays.
Describes the different ways animals and people protect themselves from cold weather and discusses how body heat, food, shelter, sunshine, clothing, and fuels all work to keep us warm.