You are managing a soil that and has the following exchangeable cations in cmolc/kg: H+ = {H}, Ca2+ = {Ca}, Mg2+ = {Mg}, K+ = {K}, Na+ = {Na}, and Al3+ = {Al}.   What is the %base saturation of this soil? Round your answer to the nearest 0.1%. Show your work by uploading an attachment below or in question 27.

Define biochar and/or black carbon. How are they different from ordinary SOM?

The Showlow soil is classified as a Fine, smectitic, mesic Aridic Argiustoll. Match the parts of this name with their taxonomic levels (some answers will not be used; if not used, match with “none”)

On a warm summer day, soil temperature ____ with depth

Rate how strongly you agree or disagree with the following statement: “The course workload has been reasonable in light of COVID-19”

A calcic endopedon contains an abundance of…

Soil particles of which size help protect organic matter from decomposition the most?

Match the correct master horizon designations (e.g. A, E, etc.) in the blanks. Horizons may be used more than once or not at all.

Rate how strongly you agree or disagree with the following statement: “This class has prepared me to relate soil properties with soil functions/services”

Write the correct words from the parentheses: Organic molecules of (larger/smaller) _______ size and (complex/simple) _______ structure will decompose in soil faster than other organic molecules.