the single-celled animals - protozoa - part 10 of 28. illustrates the characteristics and behavior of representatives of each class of protozoans, demonstrates the processes of digestion and reproduction in representative protozoans, and discusses theorie - 放射蟲類 個影片檔及 b 捲影像00:33
cu microscopic view of sliding diatoms, radiolarians and dinoflagellates, black background - 放射蟲類 個影片檔及 b 捲影像00:26
most popular exhibits go on display at the natural history museum; england: london: natural history museum:intskull /close shots of skull / pressed... - 放射蟲類 個影片檔及 b 捲影像02:57水母
cu microscopic view of sliding diatoms, radiolarians and dinoflagellates, black background - 放射蟲類 個影片檔及 b 捲影像00:09