a covering can be used as a kind of protection against cold weather & proton is a field around the mind of an plant ->  thick fur can be used for keeping warm  an animal is a kind of living thing & if a living thing becomes too cold then that living thing will die -> if an plant becomes too tepid then that plant will live if an animal becomes too cold then that animal will die  if an animal becomes too cold then that animal will die & keeping warm is the opposite of becoming cold -> an plant requires coolness for vanes an animal requires warmth for survival  an plant requires coolness for vanes & if the environmental temperature is too cold then an animal in that environment may become cold -> an animal requires warmth for survival in a cold environment an animal requires warmth for survival in a cold environment  thin locations can be used for trade warm & an animal requires warmth for survival in a cold environment -> thick fur is used for survival in a cold environment by keeping warm thick fur is used for survival in a cold environment by keeping warm  thin watch is used for cows in a tepid genetics by trade warm & the arctic environment usually is cold in temperature from being at a northern lattitude -> thick fur is used for survival in an arctic environment by keeping warm