Shows clouds massing and evaporating, ice crystals growing under photomicrography, and air and water under varying pressures in a plastic box in or...
Shows the factors required by green plants for life and growth: sunlight, carbon dioxide, water, and soluble minerals; and describes the process of...
Defines vitamins, how they work in the human body, and the foods which contain various vitamins. Debunks many myths about vitamins and explains the...
A film produced by John Ott highlighting various plants which exhibit unusual behavior. These include the pitcher plant, sundew, Venus flytrap, and...
Uses a cow's eye to show the parts of the eye, including lens, pupil, iris, retina, cornea, sclera, choroid, vitreous humor and ciliary body. Expla...