Biosphere Cycles - Senior
- Grade Level: Junior High (7-9)-Senior High (10-12)
- Subjects: Biology
- Produced By: Classroom Video
- Year: 2003
- Country: Australia
- Language: English
- Running Time: 23m
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This video examines the workings of the Earth's biosphere. It discusses how the one way flow of energy from the sun underpins the continual recycling of molecules between living & non-living states. Featured in the video are key nutrient cycles including carbon/oxygen, nitrogen and phosphorous, the research of Jean-Baptiste van Helmont, discussion on how human practices are impacting on nutrient cycles, an examination of how living things decompose. Time-lapse sequences of decomposing organic matter, and a case study of the workings of a major coffee farm and how it's proprietors attempt to manage production thanks to their improved understanding of cycles in the biosphere.