More than 150 fourth-graders from Iola, Marmaton Valley and Humboldt schools attended Earth Day activities at the old ACC farm north of Iola. Clockwise from left, conservationist Gerald Gray illustrates how the different types of water runoff affect plants and animals. To further explain, bottom right, Humboldt students Avion Seamster, Lilly Albin, Mila Westbrook and Dominque Ellsworth pour water onto various types of soil. At bottom left, Alex Lyons of the Kansas Department of Wildlife and Parks shows a legless glass lizard, which is native to eastern Kansas, and is commonly mistaken for a snake. REGISTER/RICHARD LUKEN