A grower planted a crop of poinsettias on schedule. She conducted proper watering, fertilization, pest control, pinching, chemical growth regulation and temperature control. At Christmas the crop had failed to flower and was still green and healthy. Explain how this could have happened
What will be an ideal response?
Light reached the crop during the night which placed it under short night
conditions. Since it requires long nights to flower it remained vegetative.
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The deposition efficiency of the argon-shielded GMA process is about ____%.
A. 85 B. 90 C. 95 D. 100
The accompanying figure shows an assortment of mechanical symbols. What is the second symbol from the top?
A. Diaphragm valve B. Angle globe valve C. Ball valve D. Butterfly valve
The nutrient most often limiting the growth of aquatic plants and algae in unpolluted fresh water lakes is ________
A) K B) P C) S D) N E) none of the above
How much current flows through the alternator brushes?
A) 25 to 35 A, depending on the vehicle B) 10 to 15 A C) 2-5 A D) All of the alternator output flows through the brushes