As the name suggests, "cycles" unite plants with animals and human beings. In this program, learn about the major biochemical cycles: Water Cycle, Phosphor Cycle, and Sulfur Cycle.

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Summary: The Water, Phosphor, and Sulphur Cycles in Nature (3:15); --Sulphur Cycle (3:59); -- Phosphorous Cycle (2:35); -- Hydrological Process (3:34); -- Biogeochemical Cycles (2:39); -- Water, Phosphor, and Sulfur Cycles: Introduction (2:50); -- Water/Hydrological Cycle (3:36); -- Phosphor Cycle (2:35); -- Sulfur Cycle (3:59); -- Summary (3:26); -- Credits: The Water, Phosphor, and Sulphur Cycles in Nature (2:13); .