What is the percent (%) of plant available water in the soil from the previous question? Write the following in the blanks The formula you used Your calculations (numbers inserted into the formula) %Plant-available water, rounded to 2 decimal places Blanks 1&2 will be used for partial credit only if blank 3 is wrong.

An acid soil is most likely to contain toxic quantities of which elements? Select all that apply

Did  you have enough time to complete this exam? (includes the grace period)

Soil of what texture will have the fastest saturated flow?

Which soil is most likely to have the highest AEC?

If a plant has a rooting depth of 30 cm, how many cm of water are available to it (i.e. what is TPAW)? Use your volumetric PAW (thetav_PAW) calculated from the problem above. Write the following in the blanks The formula you used Your calculations (numbers inserted into the formula) TPAW, in cm, rounded to 1 decimal place (numbers only, no units please) Blanks 1&2 will be used for partial credit only if blank 3 is wrong.

Most of the H+ and Al3+ in soil are found in the soil solution.

Why are wetlands so important? Include 2 or more ecosystem services in your answer.

Write increases or decreases in the blanks below: Aggregation increases when clay content _______ and organic matter content _______ As aggregation increases, bulk density _______

Name 2 ways a farmer can improve soil tilth and/or structure in the long term.