Studies of enoki mushrooms show that the tall, white specimens grow by cultivation in a rich carbon dioxide environment. The wild mushrooms are a darker brown in color and grow on the sides of trees such as ash, persimmon and the Chinese Hackberry tree. Thus, plants that are white in color must be grown in a carbon dioxide-rich environment. The argument is most vulnerable to criticism on the grounds that it ['commits the ad hominem fallacy which attacks the arguer instead of the argument.', 'commits the slippery slope fallacy, which states one event must inevitably follow from another event without questioning the inevitability of the event in question.', 'commits the post hoc fallacy, which mistakes correlation for causation.', 'commits the wrong direction fallacy where cause and effect are reversed.']