title: The sensitivity of earthworms to pH as a function of the time of day.
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D000845:Annelida / Q000502:physiology*; D002021:Buffers; D002490:Central Nervous System / Q000502:physiology; D002940:Circadian Rhythm; D003624:Darkness; D006863:Hydrogen-Ion Concentration; D009119:Muscle Contraction
chemical_list: D002021:Buffers