Introduce junior and senior high school students to the world of microscopy with inexpensive, unbreakable microslides. Microslides consist of a strip of film with eight photomicrographs, each reproduced exactly as you would see them through a professional microscope under ideal conditions. You can supply all your students with their own microslides. A detailed text folder is included. Viewers are available separately.
Air pollution is a serious threat to human health, yet pollutants are often invisible to the naked eye. How, then, can their presence be detected? One method is to use plants as indicators. This set shows injuries done by pollution to indicator plants. The effect these pollutants have on these plants can tell biologists how badly the air is polluted and what pollutants caused the injury. A great pre-field trip lab. Combine with Air Pollution and Human Health (79703-89 ) for a complete air pollution lab. The set features one strip of eight images. Also included is a key to image descriptions.
1. Pore in leaf epidermis (430X)
2. Air space inside leaf (480X)
3. Salt particles from the air (8,400X)
4. Sulphuric acid droplets (18,800X)
5. Fly ash (200X)
6. Dust layer on pine leaf (60X)
7. Healthy pine needle (40X)
8. Fluoride damages pine needle (40X)