The cation exchange capacities of alkaline soils are generally higher than those of acid soils (Vertisols excepted). Which of the following characteristics of alkaline soils most likely accounts for this high CEC?
A) high content of hydrous oxides of iron and aluminum
B) high content of 2:1 type clays
C) high exchangeable calcium
D) high exchangeable sodium content
E) high humus content
B
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How much channel iron remains in the scrap pile, in inches?
The inventory of a scrap pile is as follows: Channel iron, 87” Plate steel, 147” Key stock, 45” Pipe, 69” Flat iron strap, 208” A pipe support is welded using the following materials from the scrap pile: Channel iron, 61” Plate steel, 106” Key stock, 39” Pipe, 22” Flat iron strap, 189”
Explain the purpose of the right-to-know laws.
What will be an ideal response?
Commercial turkeys cannot breed naturally, and must be _____.
Fill in the blank(s) with the appropriate word(s).
What is the primary design challenge for CO2 refrigeration systems?
A) The high GWP of CO2 refrigerant B) CO2 refrigerant operates in a vacuum at low temperatures C) The high operating pressures of CO2 refrigerant D) The high refrigerant cost