The subflooring and roof decking over the posts and beams construction is commonly 2X6, 2X8, or 1 1/8" (50X150, 50X200, or 28 mm) T&G plywood.
Answer the following statement true (T) or false (F)
True
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Even the smallest hint of rust on a valve spring will require its replacement.
Answer the following statement true (T) or false (F)
What are some of the goals of U.S. farm policy?
What will be an ideal response?
Termites tend to enrich soils in the tropics much the same way as earthworms do in temperate region soils
Indicate whether the statement is true or false
You find that the CEC of a sandy loam soil at pH 5.0 is 8 cmolc/kg and at pH 8.2 it is 14 cmolc/kg. What is the most likely reason for this difference?
A) replacement of trivalent Al3+ ions with divalent Ca2+ ions at high pH. B) increase in the pH-dependent charges on 2:1 type silicate clays C) ionization of carboxyl and phenolic groups to release H+ ions D) removal of Al atoms from tetrahedral layers at low pH. E) removal of Al3+ ions from the exchange complex at higher pH.