single-celled microorganisms that lack chlorophyll. Many bacteria break down organic matter in the air, water, and soil. Some bacteria are capable of causing diseases in humans, other animals, and plants.
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.
