Editing Forum:Singular or plural

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I know, from working on outlines and research papers, that subjects should be used singularly. Is it the same with encyclopedias? Example: the hp regeneration article. It states that these are the species: Spotty Bulbears, ect. I think these are the sepices: Spotty Bulbear, Armored Cannon Beetle, ect sounds better. [[User:IAMAHIPO ocolor|<span style="color:Black">IAMAHIP<b>O_o</b></span><span style="color:Red">c</span><span style="color:#ddbb00">o</span><span style="color:Blue">l</span><span style="color:Purple">o</span><span style="color:Grey">r</span>]] 20:04, 29 March 2008 (UTC)