roots of plants - part 12 of 17. describes the different kinds of roots and explains how they serve to hold the plant in place, and how they absorb food elements from the soil. time-lapse photography, cinemicrography, animated drawings and laboratory expe - 原生質 個影片檔及 b 捲影像00:31
we really have to adapt to the rer": marie de leusse takes the rer d six times a day to travel between her flat in montgeron and the school where she... - 原生質 個影片檔及 b 捲影像07:00
what is a fish? - part 38 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 原生質 個影片檔及 b 捲影像00:32
what is a fish? - part 37 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 原生質 個影片檔及 b 捲影像00:31
what is a fish? - part 36 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 原生質 個影片檔及 b 捲影像00:30
what is a fish? - part 35 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 原生質 個影片檔及 b 捲影像00:33
what is a fish? - part 34 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 原生質 個影片檔及 b 捲影像00:30
what is a fish? - part 33 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 原生質 個影片檔及 b 捲影像00:30
amphibian embryo (frog, toad, and salamander) - part 5 of 28. combining time-lapse and microphotography with animated cross-section diagrams, the film illustrates the developmental processes by which a single-celled amphibian egg is transformed into a man - 原生質 個影片檔及 b 捲影像00:25
amphibian embryo (frog, toad, and salamander) - part 4 of 28. combining time-lapse and microphotography with animated cross-section diagrams, the film illustrates the developmental processes by which a single-celled amphibian egg is transformed into a man - 原生質 個影片檔及 b 捲影像00:34
evolution of vascular plants: the ferns - part 8 of 28. describes the evolution of vascular systems in land plants. the highly specialized structures that occur in vascular plants are shown through investigation of the fern. explains the adaptive advantag - 原生質 個影片檔及 b 捲影像00:31
evolution of vascular plants: the ferns - part 7 of 28. describes the evolution of vascular systems in land plants. the highly specialized structures that occur in vascular plants are shown through investigation of the fern. explains the adaptive advantag - 原生質 個影片檔及 b 捲影像00:34
writing molecular assembler in digital media : molecular assembler stock mp4 video - background molecular assembler - 原生質 個影片檔及 b 捲影像00:14
