Which of the following micronutrients becomes more available for plant uptake as soil pH is increased from pH 6 to pH 8?
A) zinc
B) manganese
C) boron
D) iron
E) none of the above
E
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A stream of warm water is produced in a steady-flow mixing process by combining 
of cool water at 25°C with 
of hot water at 75°C. During mixing, heat is lost to the surroundings at the rate of 30 
What is the temperature of the warm water stream? Assume the specific heat of water is constant at 
What will be an ideal response?
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What type of body protection protects against sparks?
A) Aprons B) Arc flash suits C) Reflective clothing D) Flame-resistant clothing
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One helpful resource for urban gardeners can be found in the local horticulture societies
Indicate whether the statement is true or false
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Wattage is ________
A) the unit for current B) the unit for power C) the unit for voltage
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