Rectified
add Carbon Dioxide Photosynthetic Limit as possible cause of recent megafauna extinction. Might be original work. Went ahead and put it at the top.
19:09
+1,999
BG19bot
WP:CHECKWIKI error fix for #61. Punctuation goes before References. Do general fixes if a problem exists. - using AWB (11756)
08:56
+85,923