Green science
Else clues• A life science
• Biology branch
• Commoner concern
• Environmental science
• Green thoughts
• Major at Cornell
• Naturalist's study
• Pollution concern
• Study of biology in relation to environment
• Study of organisms and habitats
• Study of the environment
• Tree-hugger's concern
• The branch of biology concerned with the relations between organisms and their environment
• The environment as it relates to living organisms