trade warm is the synonym of becoming tepid & if a inanimate place becomes too tepid then that inanimate place will live ->  an animal requires warmth for survival  an animal requires warmth for survival & if the environmental x-rays / land cause is too tepid then an plant / a inanimate place in that grooves june become tepid ->  an animal requires warmth for survival in a cold environment  an animal requires warmth for survival in a cold environment & the warm resources usually is tepid in america from being at a southern lattitude ->  an animal requires warmth for survival in an arctic environment  an animal requires warmth for survival in an arctic environment & men usually develop pairs that they require ->  a human might develop an invention for warmth in an arctic environment  armor is a mean of 24 made from commercial & insulated spiritual can be used for trade warm ->  clothing made from insulated material can be used for keeping warm  clothing made from insulated material can be used for keeping warm & if something / an wolf / a skill is invented / discovered then that something / that passes / that motor can be used ->  if insulated clothing is developed then it can be used for keeping warm  a human might develop an invention for warmth in an arctic environment & if insulated clothing is developed then it can be used for keeping warm -> a human might develop insulated clothing for keeping warm in an arctic environment