an agent used to control undesirable organisms. This can be an insecticide for insect control, an herbicide for weed control, a fungicide for control of fungal plant diseases, or a rodenticide for killing rats and mice.
pltintern
Christine Song supports both Project Learning Tree (PLT) US and Canada's program delivery and reporting, program research, and communications. Christine holds a Master of Environmental Science from the University of Toronto and and a combined degree with a Bachelor of Science in ecology and zoology and a Bachelor of Science in anthropology from the University of Calgary.
