With the 20-1423 How Pollution Affects Plants explore the effects of air pollutants, acid rain, road salt applications, the "greenhouse effect" and other common, chemical wastes on plants.

Challenge your class with a series of controlled experiments which simulate the impact that man-made pollutants have on plant systems, seed germination and growth. The students directly observe the physical changes that transpire in the environment as a result of man's industrial expansion.