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Chapter 4 - Ecosystems

life_science

 

 

Unit B - The Patterns of Life

  • Chapter 4 - Ecosystems

How do organisms exchange energy and nutrients in an ecosystems?

Southern Redback Vole

Young Naturalist Awards Essay

Aspen: A Keystone Species

By keeping a nature journal, this 16-year-old from Colorado quickly saw how aspens support and sustain biodiversity. Learn more about the most widely distributed tree species in North America.

tidepools

Young Naturalist Awards Essay

Tide Pools and the Life Within Them

Wade through the tide pools of Doheny State Beach with this seventh-grader from California, and discover the many animals that thrive in this ever-changing world of sand and surf.

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Science Bulletin

Jellies Down Deep

This Bio Bulletin, which features spectacular underwater footage, follows scientists at the Monterey Bay Aquarium Research Institute as they retrieve jellies from the deep. For background information, educational resources, and more, visit Jellies Down Deep on the Science Bulletins Web site:http://www.amnh.org/sciencebulletins/.
Science Bulletins is a production of the National Center for Science Literacy, Education, and Technology (NCSLET), part of the Department of Education at the American Museum of Natural History.

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Science Bulletin

Bronx River Restoration

In the 1600's, New York City's Bronx River was a drinking water source and a sylvan haven for beaver, oysters, and herring. It became blighted as urbanization progressed, reincarnating as an industrial power source, an open sewer, and a garbage dump. Today, landscape ecologists are reconstructing the waterway's ecological history as a reference point for its restoration effort. Watch conservation teams coax new life into the Bronx River as they restock it with native fish, lay down oyster beds, and remove invasive species along its shores.

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