Basic ecology: Lakes - aging and pollution
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Explains the aging process of lakes. Examines the typical plant, fish and animal life found in various lake habitats. Investigates the changing water quality and the succession of organisms throughout the aging process. Emphasises the human impact in speeding this process.
Sources
- 16mm Filmography (legacy record) — title, description, catalog record
Original permalink · Record added 2026-01-23 03:17:25