Fresh Water Plankton and the Chain of Life
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Reveals the life-cycle of the miscroscopic plants and animals that constitute the plankton, with emphasis on algae. Shows the effect of seasonal changes in weather on fresh water plankton. Depicts the value of plankton in keeping ponds clear and in feeding various species of fish.
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- 16mm Filmography (legacy record) — title, year, creator, length, format, color, description, catalog record
Original permalink · Record added 2024-04-22 17:31:55