# Towler Classification => .. Up a Level => /fire/ Fire → The most common reactional known. => /heat/ Heat → A reactional that produces thermal energy without flames or consuming fuel or oxygen. # Footer Below are various useful links within this site and to related sites (not all have been converted over to Gemini). => /sources/ Sources => /categories/ Categories => /support/ Support => /privacy/ Privacy => /license/ License => https://fedran.com/categories/towler-classification/ HTML => //d.moonfire.us/ D. Moonfire => //d.moonfire.us/contact/ Contact