Antonyms for "Global Environ Change Rep" could be words like "local", "narrow", or "specific". While "global" refers to something that is widespread or universal, "local" refers to something that is confined to a particular area. "Narrow" implies a lack of breadth or scope, while "specific" connotes a high degree of detail or particularity in description. Additionally, antonyms for "environ change" could include words like "stasis", "constancy", or "sameness", which all suggest an absence of alteration or transformation. In contrast, "rep" could be antonymized by words like "amateur", "outsider", or "layperson", which denote a lack of expertise or experience in a particular field.