premise: a fox is a kind of animal sent2: thick fur can be used for keeping warm sent3: temperature is a property of weather sent4: a fox grows thick fur as the seasons change sent5: winter has cold temperatures sent6: if the environmental temperature is too cold then an animal in that environment may become cold sent7: an animal requires warmth for survival sent8: winter is a kind of season sent9: weather changes from seasons to seasons.
hypothesis: a fox grows thick fur to keep warm as the season changes to winter