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Results 31 - 32 of 32 for 'deadly volcanoes' <<  1 2 3 4
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This Nine Planets site highlights the history of spacecraft and discoveries they have made. It is divided into three categories that lead the user to specific mission information. Past Missions discusses the Luna, Mariner, Apollo, Pioneer, Venera, Viking, Voyager, Magellan, and Mars Observer. Ongoing Missions includes information about Voyager, Galileo, Hubble Space Telescope, Ulysses, Mars Surveyor ... Full description.
Grade level: Middle (6-8), High (9-12), College (13-14)
Resource type: Imagery - remotely sensed, Ref. material
Subject: Space science, Technology
 
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This resource explains how energy and pollutants move through an ecosystem, how ecosystems are balanced and how they may be affected by human activities. Concepts described include the roles of organisms, food chains and food webs, pyramids of biomass, biological magnification, and biogeochemical cycles such as water, carbon, nitrogen, and phosphorous cycles. Full description.
Grade level: High (9-12), College (13-14)
Resource type: Illustration - scientific, Ref. material
Subject: Biology, Ecology, Environmental science
 
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Results 31 - 32 of 32 for 'deadly volcanoes' <<  1 2 3 4