Hidden Bibliographic Details
| Other authors / contributors: | Griswold, Alex, producer.
Lewicke, Anna, narrator.
Harvard Environmental Economics Program, production company.
Harvard-Smithsonian Center for Astrophysics. Science Media Group, production company.
Harvard-Smithsonian Center for Astrophysics, production company.
Annenberg Learner (Firm), film distributor.
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| Digital file characteristics: | video file
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| Notes: | Title from resource description page (viewed August 14, 2018).
In English.
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| Summary: | Why are there so many living organisms on Earth, and so many different species? How do the characteristics of the nonliving environment, such as soil quality and water salinity, help determine which organisms thrive in particular areas? These questions are central to the study of ecosystems--communities of living organisms in particular places and the chemical and physical factors that influence them. Learn how scientists study ecosystems to predict how they may change over time and respond to human impacts.
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