Biological Soil Crust Activity Questions 2 & 3

What is it?

2. & 3. Biological soil crust is a living soil made up of _ _ _ _ _ _ _ _ _ _ _ _ _ (which used to be called blue-green algae), mosses, lichen and _ _ _ _ _. It covers about 70 percent of the soil surface here.

 

Last updated: February 24, 2015

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