DEFINITIONS 1.-Define soil. 2.-Define weathering. 3.-Define horizon. 4.-Define humus. 5.-Define parental material. COMPLETE THIS TEXT ABOUT THE MAIN FUNCTIONS OF THE SOIL Soil performs many critical functions in almost any ecosystem (whether a farm, forest, prairie, marsh, or suburban watershed). There are seven general roles that soils play: a.-serve as engineering media for construction b.-animals that live in the soil c.-growth of all kinds of plants. d.-act as a living filter to clean water e.-process recycled nutrients f.-absorb, hold, release, alter, and purify g.-emitting and absorbing gases Soils serve as media for __________________________________________ Soils modify the atmosphere by __________________________ (carbon dioxide, methane, water vapor, and the like) and dust. Soils provide habitat for ____________________________(such as groundhogs /marmotas/, moles