Date: 2010-10-06 11:25:55

Environmental science

Systems ecology

Aquatic ecology

Philosophy of biology

Fisheries

Biodiversity

Ecosystem

Aquatic ecosystem

Ecology

Biology

Water

Environment

1 Student Worksheet: Human Impacts on River Ecosystems The Athabasca River in Jasper National Park, Alberta. Credit: iStockphoto.com/The Power of Forever Photography

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