what plants need for growth (2nd edition) - part 16 of 19. time-lapse photography, laboratory investigation, and observation of plants in controlled environments demonstrate the independence of growing things on water, air, light, food, and warmth. film s - 光合作用 個影片檔及 b 捲影像00:31
a plant through the seasons (apple tree) - part 12 of 19. relates the story of a boy's discovery that a tree, like a plant, grows from a single seed. children will learn how and why a tree's life cycle changes through the seasons, how a tree's age is dete - 光合作用 個影片檔及 b 捲影像00:35
photosynthesis (3rd edition) - part 32 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involve - 光合作用 個影片檔及 b 捲影像00:31
photosynthesis (3rd edition) - part 20 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involve - 光合作用 個影片檔及 b 捲影像00:28
photosynthesis (3rd edition) - part 18 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involve - 光合作用 個影片檔及 b 捲影像00:31
photosynthesis (3rd edition) - part 9 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involved - 光合作用 個影片檔及 b 捲影像00:36
photosynthesis (3rd edition) - part 7 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involved - 光合作用 個影片檔及 b 捲影像00:31
photosynthesis (3rd edition) - part 5 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involved - 光合作用 個影片檔及 b 捲影像00:34
photosynthesis (3rd edition) - part 2 of 35. a fascinating look at a process that is one of the key energy producers for all life - and the current research being done to expand its potential use. the film examines chemical changes and structures involved - 光合作用 個影片檔及 b 捲影像00:31
underwater close up and slow motion of bright green kelp leaf/ seaweed/algae floating and swaying against a light background - 光合作用 個影片檔及 b 捲影像00:31
