Subjects: Gardening--Study and teaching (Elementary); Environmental education--Activity programs; Science--Study and teaching (Elementary)EDUCATION / Teaching / Subjects / Science & Technology; GARDENING / Reference; NATURE / Ecosystems & Habitats / General
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Subjects: City planning--Environmental aspects--Pennsylvania--Pittsburgh; Sustainable development--Pennsylvania--Pittsburgh; Urban ecology (Sociology)--Pennsylvania--PittsburghSCIENCE / General; SCIENCE / Life Sciences / Ecology; SCIENCE / Environmental Science
Subjects: Water security--Social aspects; Water-supply--International cooperationSCIENCE / General; BUSINESS & ECONOMICS / Economics / General; POLITICAL SCIENCE / International Relations / General
Subjects: Biogeography; Island ecology; Glacial epochSCIENCE / General; SCIENCE / Earth Sciences / General; SCIENCE / Life Sciences / Ecology
Subjects: Ecology; BiophysicsSCIENCE / Physics / General; SCIENCE / Life Sciences / Ecology
Subjects: Variation (Biology); Body size; MacroecologySCIENCE / General; SCIENCE / Life Sciences / Ecology; SCIENCE / Life Sciences / Evolution
Subjects: Marine ecology; Conservation biology; EcologySCIENCE / Life Sciences / Ecology; NATURE / Environmental Conservation & Protection; SCIENCE / Life Sciences / Zoology / General
Subjects: Biotechnology; BioremediationSCIENCE / Life Sciences / Microbiology; SCIENCE / Biotechnology; SCIENCE / Life Sciences / Ecology
Subjects: Sustainability; Landscape architectureSCIENCE / Life Sciences / Ecology; ARCHITECTURE / Landscape; SCIENCE / Environmental Science
Subjects: SCIENCE / Research & Methodology; SCIENCE / Life Sciences / Ecology; SCIENCE / Life Sciences / Zoology / General