[en-vahy-ruh
n-men-tl-ist, -vahy-ern-] 
| 1. | an expert on environmental problems. |
| 2. | any person who advocates or works to protect the air, water, animals, plants, and other natural resources from pollution or its effects. |
| 3. | a person who believes that differences between individuals or groups, esp. in moral and intellectual attributes, are predominantly determined by environmental factors, as surroundings, upbringing, or experience (opposed to hereditarian ). |
| en·vi·ron·men·tal·ism (ěn-vī'rən-měn'tl-ĭz'əm, -vī'ərn-) n.
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