soil containing a mixture of clay, silt, sand, and humus. Loam contains a variety of particle sizes, which makes it ideal for most trees and other plants as it provides a balance of water retention and aeration.
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.
