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What is an ecosystem, and how can we study one? Is the earth an open or closed system ... How do we define "biogeochemical cycles," and how are they important ...
http://www.globalchange.umich.edu/globalchange1/current/lectures/kling/ecosystem/ecosystem.html
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ecosystem
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ecosystems
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biomes
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Dedicated to fostering the evolution of an environmentally sustainable society.
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Backyard nature study
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nature
gardening
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plants
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kids
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green
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environment
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Tropical rainforest conservation and environmental science news ... In April 2008 Mongabay.com was named as one of Time Magazine's Fifteen Top Green Websites ...
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environment
conservation
ecology
rainforest
nature
news
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Site for K-12 teachers and students looking for international and U.S. databases, research and policy papers, factsheets, lesson plans, and activities on the ...
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environment
science
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Conducts education and research in the areas of biodiversity, ecological farming practices, and environmental restoration.
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environment
sustainability
activism
community
ecology
green
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No information avaiable
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environment
green
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learning
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Dedicated to fostering a profound understanding of the natural world, grounded in direct experience, that leads to sustainable patterns of living.
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sustainability
education
environment
ecology
green
food
ecoliteracy
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Learn about the latest discoveries and current research in all fields of science. See news articles, video, and images covering breakthroughs in biology, the earth sciences, astronomy, physics, and computer science.
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science
news
technology
research
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magazine
daily
health
education
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Provides links to WWF national organizations, program offices, and associate offices. ... United States. WWF International © 2009 WWF, All rights reserved. ...
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environment
nature
wildlife
ecology
wwf
animals
science
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world
charity
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