Observe the impact of industrial wastes on plant systems. 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. Grade Level: 7-10. Class Size: 40 students. Your students will * Understand the different types of environmental pollution * Predict the effects of varying levels of pollution exposure on the growth and development of plants * Observe the effects of several types of environmental pollutants on plants * Construct graphs illustrating the effects of environmental pollutants on the germination and growth of plants