How Did Jack London's Use Of Naturalism In To Build A Fire

In Jack London's “To build a Fire” he expresses naturalism. Naturalism is man vs. Nature and nature wins. For example, when the man made a mistake when he stepped into a pool of water. This forced him to create a fire to dry his feet and socks and so he wouldn't have horrible frost bite.
Another example would be towards the end when he was building another fire but failed to realised where he was building it, which was under a tree with a patch of snow on the branches which soon fell on his fire and cause it to burn out. This last fire he built soon became his only hope and now it was gone. This showed that the minor detail of the placement of the tree had cost him his life and caused nature to when in both situations he had faced.
Naturalism